[HN Gopher] Medieval staircases were not built going clockwise f...
       ___________________________________________________________________
        
       Medieval staircases were not built going clockwise for the
       defender's advantage
        
       Author : BerislavLopac
       Score  : 216 points
       Date   : 2023-10-09 17:20 UTC (5 hours ago)
        
 (HTM) web link (fakehistoryhunter.net)
 (TXT) w3m dump (fakehistoryhunter.net)
        
       | Levitating wrote:
       | This reminds me of the many articles stating that pirates didn't
       | wear eye-patches to cover up an injury but that they used them
       | for for their eyes to adjust to the dark when entering a ships
       | hold. Even though there's more evidence that eye injuries were
       | probably just common across pirates.
       | 
       | Applying Okkam's razor I'd conclude that most medieval staircases
       | were probably build clockwise simply because most staircases were
       | already built clockwise.
        
       | JdeBP wrote:
       | It's amusing that the Hacker News reaction so far is to advance
       | alternative hypotheses as to why helical staircases have a
       | predominant chirality, without first establishing, as one should
       | do if one were rigorous, that there is a need for an explanation
       | in the first place, and that this is not, as is suggested in
       | other articles (including one hyperlinked by the headlined one
       | here), just a statistical fluke without significance that doesn't
       | need explanation.
       | 
       | To put things in modern parlance: A meme, invented from whole
       | cloth by Daily Telegraph writer Theodore Andrea Cook 120 years
       | ago because he liked fencing, was still going strong on Twitter
       | in 2022; and people are still falling prey to believing its
       | assumptions.
       | 
       | One has to appreciate the additional irony of the Twitter account
       | actually being named "history _in memes_ ".
        
         | the_af wrote:
         | Agreed! I like that there _has_ to be an explanation.  "Just
         | because" or "it's the same either way" aren't acceptable. I
         | suppose the internet loves to solve a puzzle (a sentiment I
         | understand and share!).
        
         | [deleted]
        
       | fsckboy wrote:
       | this title/headline is ambiguous as to what it means.
       | 
       | claim: "Medieval staircases were built going clockwise for the
       | defender's advantage"
       | 
       | counterclaim: "no they were not; medieval staircases were not
       | built going clockwise for the defender's advantage"... it was for
       | a different reason, or even, they weren't even built that way.
       | 
       | clarifying original claim: "Medieval staircases were not built
       | going clockwise for the defender's advantage, they were built
       | counterclockwise."
       | 
       | confused? me too.
       | 
       | The title should be, "Exploring whether medieval staircases were
       | built with chirality to benefit right handed defenders."
        
       | codedokode wrote:
       | Such staircases are pretty scary to climb even without a knight
       | attacking you because there is nothing to hold, the steps are not
       | flat and it is easy to fall down.
       | 
       | Also, such straicases are used not only in medieval castles. A
       | modern Russian 19th century cathedral also has a staircase of
       | such type. Probably, because cathedrals must be built using
       | traditional architecture?
        
         | EVa5I7bHFq9mnYK wrote:
         | That cathedral you are talking about, has two spiral
         | staircases, one counter-clockwise and the other clockwise.
        
       | antisthenes wrote:
       | Usually if the siege got to the point where attackers were IN
       | YOUR TOWERs, then the next logical step would have been to either
       | surrender or collapse the tower on the attackers to win a
       | tactical victory.
       | 
       | I am willing to bet $10000, that the number of sieges won or lost
       | due to a staircase fight between knights is 0.
       | 
       | Also I wonder what led to this hypothesis being created in the
       | first place? That's a much more interesting question to me. Was
       | it some eccentric historian just inventing it?
        
       | chmod600 wrote:
       | Considering that the construction costs are identical, there
       | needn't be a very strong reason to do it one way vs the other.
       | Any reason would be enough, which might include some remote
       | possibility of a battle advantage.
        
       | crazygringo wrote:
       | What about evidence for a simpler theory, such as they were built
       | in the direction that made most sense from where the doors would
       | wind up?
       | 
       | Like if you go through the bottom/top door, it's more natural to
       | walk straight forwards and then curve, rather than walk in, turn
       | 90deg, and then walk upwards.
       | 
       | Obviously this wouldn't matter if the door were located facing
       | precisely the middle of the spiral, but it certainly does if it
       | more naturally opens on one side of the spiral.
        
         | pzs wrote:
         | Doors can be built to open in four ways: inwards or outwards,
         | hinge on the left or right. (Sorry if the language is wrong,
         | non-native speaker here.) Considering that I am not sure I can
         | follow why the door would make one direction more natural than
         | the other. Maybe because there were more right-handed people
         | than left-handed which made one setup more natural than the
         | other?
        
           | crazygringo wrote:
           | Sorry, I don't mean the direction of the door but the
           | _position_ of the door itself in the wall.
           | 
           | I can't draw anything here, but imagine the staircase is the
           | width of two doors. So the door could be on either side
           | (closer to either edge).
           | 
           | If the door is on the left, you want the staircase to curve
           | upwards to the right. And vice-versa.
        
           | bluGill wrote:
           | Often the room itself gives you reason to prefer one
           | direction or another. If the door is in a corner you want the
           | open door to be against the wall (unless you don't - I can't
           | think of why, but...). If there are other doors on the same
           | wall you need to consider them - sometimes hinges all the
           | same for symmetry; sometimes opposite so the the doors don't
           | bang into each other (when they are right next to each other.
        
           | gowld wrote:
           | > hinge on the left or right.
           | 
           | Not "left" or "right", which is different on roomside and
           | stairside, but inside or outside of the spiral.
        
             | w-ll wrote:
             | Wouldn't the doors likely be on the wall of the spiral. A
             | door in the spiral stairs seems very awkward.
        
             | Xylakant wrote:
             | Left and right are usually (at least here in Germany)
             | defined relative to "standing on the side the door will
             | open towards and facing the door".
        
       | MarketingJason wrote:
       | What if it was still about the weapons - but more about them
       | being sheathed? A right hander will usually have a sword sheathed
       | on their left hip sticking out and down. Maybe it was a safety
       | measure to have the tip not hanging over the inner part of the
       | stairwell as someone was going up where someone behind them could
       | get poked versus more along the outer wall?
        
       | aristofun wrote:
       | This is what strikes me more than the topic:
       | 
       | > The person below you has the advantage of jabbing at your legs
       | 
       | Weren't virtually all fighters in those times men?
        
         | goodpoint wrote:
         | No.
        
           | aristofun wrote:
           | oh really, how much evidence do you have about women storming
           | the castles all the way through inside?
        
             | JdeBP wrote:
             | How much evidence do you have that "storming the castles"
             | was how sieges ended _at all_? Errol Flynn movies are not
             | reality.
             | 
             | To quote James Wright, who is an archaeologist:
             | 
             | > we know a fair bit about how sieges were ended, and it
             | was never the desperate violent rout on the staircases that
             | is so beloved of Hollywood films.
             | 
             | https://triskeleheritage.triskelepublishing.com/mediaeval-
             | my...
        
         | howenterprisey wrote:
         | Can you expand on that?
        
           | aristofun wrote:
           | why use (abuse) the word "person" then?
        
             | beej71 wrote:
             | Because if you say the "man" it implies that women fighters
             | would not have the same advantage, when clearly they would.
             | 
             | As since men are people, I'd argue it's not an abuse of
             | language.
        
               | aristofun wrote:
               | again -- in those times women did not fight to get
               | advantage in the first place why not use this to be more
               | precise in the language?
        
               | throwbadubadu wrote:
               | Majority, but not all were men? But why care about that
               | at all and consider it the most striking thing about the
               | article? Even rethinking it 3 times I'm not sure what you
               | find preciser in this, or how it is not completely
               | irrelevant?
        
         | dplavery92 wrote:
         | From the captioned art in the article: "Siege, from the
         | Peterborough Psalter, early 14th century, via the KBR Museum,
         | Belgium. Yes, those defenders are all women."
        
         | hnarn wrote:
         | So what?
        
       | ofslidingfeet wrote:
       | Saying it definitively didn't factor in is _at least_ as stupid
       | as saying it definitively did.
        
       | usrusr wrote:
       | Long article without even the tiniest hint of evidence to support
       | the claim that the easier to defend theory wasn't the reason why
       | apparently there is a considerable imbalance in staircase
       | direction.
       | 
       | The reality is that most of the time most castles were not
       | involved in violence at all (outside of rough methods of keeping
       | order I guess). Even if staircase fighting never ever happened,
       | the _imagination_ of heroically fending off invaders who made it
       | that far in person could have easily been a clever pose, a tool
       | of the trade for architects to give the impression of really
       | knowing _all_ the tricks. Claiming better defensibility would
       | have made an even bigger impression on the future inhabitant than
       | on tourists hundreds of years later. Because, assuming that the
       | article is not wrong in this, the customer has just as little
       | experience fighting in a staircase as the tourist hordes.
       | 
       | Medieval snake-oil, claiming that it never happened should
       | require better evidence than "you really would not want to ever
       | let invaders get that far".
       | 
       | If it's a 30/70 distribution chances are that almost half of
       | those 70 are just as random or motivated by more pressing
       | concerns than the "wrong direction" 30, and of the remaining 40
       | that make up the imbalance, a certain amount will be habitual
       | copies of conscious decisions for the snake-oil winding.
       | 
       | Yeah, whenever a tour guide brings up the defensive advantage
       | story, chances are that this particular staircase wasn't really
       | designed as defense-optimized but random/some other
       | reason/habitual. But unless someone proposes a better explanation
       | for the imbalance (I don't know, some pseudoreligious thing
       | perhaps? Some echo from whatever way Romans preferred? Oncoming
       | traffic etiquette, like climbing side steps toward the steep
       | side, taking a break grabbing the stair's spine while the
       | descending side slides past at the outer wall, and they'd both
       | rather have their dominant hand wall-side?), it's a rather bold
       | claim to call it a victorian era fabrication.
        
         | p1esk wrote:
         | _the customer has just as little experience fighting in a
         | staircase as the tourist hordes_
         | 
         | You're talking about a customer who most likely received a
         | rigorous sword fight training, and probably participated in
         | numerous knight tourneys. And spent his life living in castles,
         | walking up and down those stairs. And who most likely knew
         | someone who had personally engaged in castle offense or defense
         | (the world was a lot smaller back then). Somehow I think this
         | customer would know a thing or two about defending castles.
         | 
         | You could be right about the sales tactics, but comparing a
         | medieval castle owner and a 21st century tourist is a bit much.
        
         | [deleted]
        
         | civilitty wrote:
         | I recommend Bret Devereaux's series on medieval fortifications,
         | specifically the manpower problem [1]:
         | 
         |  _> While sapping (tunneling under and collapsing
         | fortifications) remained in use, apart from filling in ditches,
         | the mole-and-ramp style assaults of the ancient world are far
         | less common, precisely because most armies (due to the
         | aforementioned fragmentation combined with the increasing
         | importance in warfare of a fairly small mounted elite) lacked
         | both the organizational capacity and the raw numbers to do
         | them._
         | 
         | Overall, medieval armies just didn't have the resources to
         | siege for as long and as intensely as the Romans and other
         | ancient armies did. Until the early modern period and gunpowder
         | artillery, defenders in castles had a much bigger advantage
         | over attackers so often attackers just didn't bother. They were
         | more common than actual pitched battles though and most ended
         | through surrender rather than successful assault.
         | 
         | The book Devereaux mentions _Soldiers' Lives Through History:
         | The Middle Ages_ is a great resource for further reading -
         | there 's a whole chapter on sieges. It starts out describing
         | how much worse the life for siegers often was compared to the
         | besieged.
         | 
         | [1] https://acoup.blog/2021/12/10/collections-fortification-
         | part...
        
         | JdeBP wrote:
         | You have the burden of proof the wrong way around.
         | 
         | The earliest occurrence of this hypothesis was propounded by
         | Theodore Andrea Cook in 1903. That was not the Victorian Era,
         | but was _later_. Cook was not a historian, but a sports writer
         | and art critic. The book was _Spirals in Nature and Art_. And
         | this hypothesis is a half-paragraph aside, with words like
         | "would" and "probable", given with _zero_ supporting evidence,
         | and clearly one (as xe wrote  "I think") that Cook originated.
         | 
         | The burden of proof is to prove that _that_ is _true_ , not to
         | blithely assume that it is true and demand that there be
         | evidence to prove it false.
         | 
         | Especially since Theodore Andrea Cook held that "right-handed
         | spirals are more common in staircases". By "right-handed
         | spiral", Cook actually meant anti-clockwise staircases (as can
         | be seen from figure 29 in the book). Not even Cook believed the
         | premise that has given rise to this 120-year-old myth. Cook
         | wrote that anti-clockwise staircases were "more common"
         | _despite_ the fact that clockwise ones would have been better
         | for this reason, a reason that xe invented from whole cloth
         | without any support from how helical staircases even featured
         | in any siege of any castle in history.
         | 
         | 120 years of uncritical out of context repetition and
         | augmentation later, here we are; with people demanding that the
         | burden of proof lies with those who challenge something that
         | was never proven in the first place, not expertly held, and not
         | even held true by its own originator.
        
       | xyzelement wrote:
       | Even if defensibility was not the primary design concern, I am
       | sure it factored in as an obvious consideration to accommodate
       | when possible - eg if you could make it go any which way, you
       | might as well make it go the way that gives you a better chance
       | in the most likely scenario.
        
       | karaterobot wrote:
       | To be clear, this article does not attempt to explain why 70% of
       | stairs _were_ built clockwise, which seems salient. And the
       | strongest arguments against the myth are that fighting on a
       | staircase is bad no matter what (granted), and that certain,
       | specific, famous staircases (like those in the Tower of London)
       | were built counter-clockwise. To me, that 's not a slam dunk case
       | against the myth, it could be explained by there not being a
       | centralized Castle Staircase Building Code across all Europe,
       | over the course of 1000 years, which was not a misunderstanding I
       | had anyway. I am unconvinced for now!
        
         | afterburner wrote:
         | The article is from the point of view of a responsible
         | historian.
         | 
         | There is no evidence of the myth being true. There are no
         | sources in history suggesting it.
         | 
         | It might be true. But there is no evidence that it is.
         | 
         | Proving it false is another matter.
        
           | karaterobot wrote:
           | I don't know about that. They seemed to be definitively
           | saying the staircases were not built to aid defenders, but
           | didn't have strong evidence for that. If they'd said "there
           | is no positive evidence that..." or "we have no reason to
           | believe that..." then I'd agree with you, but what they wrote
           | was:
           | 
           | > Medieval staircases were NOT built going clockwise for the
           | defender's advantage
           | 
           | and
           | 
           | > it's not true.
           | 
           | Which seem like confident statements with no affirmative
           | evidence to support them.
           | 
           | In fairness, their conclusion is more measured:
           | 
           | > So in conclusion: there's no evidence for this claim and it
           | also doesn't make a lot of sense.
           | 
           | But that's not the headline they went with.
        
             | ImPostingOnHN wrote:
             | by default, it is untrue until sufficient evidence arises
             | that it is true
             | 
             | see also: Russell's teapot
             | 
             |  _[0]:https://en.wikipedia.org/wiki/Russell%27s_teapot_
        
               | ncallaway wrote:
               | Okay, so let me them make the claim: "It is false that
               | staircases were built clockwise to advantage the
               | defender".
               | 
               | Then, since we agree that the claim has no evidence to
               | support it, we assume it is false.
               | 
               | Therefore, we conclude, "it is true that staircases were
               | built clockwise to advantage the defender".
               | 
               | I agree that the burden of proof lies upon the person
               | that makes the claim. But that doesn't mean we assume the
               | opposite of the claim must be true until they do. It
               | means we assume ignorance.
               | 
               | So, a more correct statement would be: "In the absence of
               | evidence of why the staircases were constructed, we do
               | not know why they were constructed".
               | 
               | To say the absence of evidence proves the opposite of the
               | claim is wrong.
        
               | ImPostingOnHN wrote:
               | the actual (and also initial) claim here is that the myth
               | is true, the author is simply pointing out that there is
               | insufficient evidence to support the myth, and thus we
               | fall back on the null hypothesis, aka the default: that
               | there does not yet exist sufficient evidence to conclude
               | the myth is anything other than false.
               | 
               |  _> But that doesn 't mean we assume the opposite of the
               | claim must be true until they do. It means we assume
               | ignorance._
               | 
               | Regardless of the wording, the gist is the same: we _/
               | don't/_ assume ignorance, we treat the claim, like
               | Russell's teapot _[0]_ , or any other unsupported claim,
               | as false until such evidence arises, since there are an
               | infinite number of unfalsifiable premises, and we neither
               | want to, nor do, in practice, treat them all as maybe
               | true, maybe not, forever.
               | 
               | tl;dr: As Russell's teapot _[0]_ demonstrates, _yes_ ,
               | there is a default, and that is that a thing is false
               | unless sufficient evidence exists to believe otherwise.
               | _No_ , we don't treat all unfalsified (and unfalsifiable)
               | hypotheses as unknown and assume ignorance.
               | 
               |  _[0]:https://en.wikipedia.org/wiki/Russell%27s_teapot_
        
               | calderknight wrote:
               | If there's no evidence about a situation, there's no
               | evidence for _any_ theory about the situation. There 's
               | no evidence for the proposition _A_. There 's no evidence
               | for the proposition _not A_. By your reasoning we have to
               | believe that both these propositions are untrue: _A_ and
               | _not A_. This seems totally insane.
        
               | ImPostingOnHN wrote:
               | As Russell's teapot _[0]_ demonstrates, that is not the
               | case. A thing, whether the existence of a teapot floating
               | in space, or an old architecture myth, is by default
               | untrue until sufficient evidence arises showing it is
               | true. This article is simply pointing out that such
               | evidence doesn 't exist in the staircase attacker theory.
               | 
               | We do not believe that maybe it is true this teapot
               | exists, maybe not, simply because the initial hypothesis
               | (that it is true in the first place) hasn't yet been
               | falsified. If that were the case, I could make up a
               | thousand improbable myths, and say they're all maybe
               | true, maybe not, and we would have to treat them all as
               | equally plausible until someone wastes their time trying
               | to disprove all thousand, and then I could make up a
               | thousand more.
               | 
               | That is why the burden of proof of truth lies with the
               | person asserting the truth of a teapot/staircase belief
               | 
               | To add to your A vs. not-A problem, you are close to
               | identifying the resolution, too: For an analogue in
               | statistics, A = _" this staircase explanation has
               | sufficient evidence to say it is true"_, not-A = _" this
               | staircase explanation does not have sufficient evidence
               | to conclude it is true"_. Not-A here is example of what
               | is called the null hypothesis in statistics. The null
               | hypothesis is the default.
               | 
               |  _[0]:https://en.wikipedia.org/wiki/Russell%27s_teapot_
        
               | calderknight wrote:
               | The point of Russell's argument is that we should not
               | believe in the Christian god/the teapot. Not that we
               | should believe that those things do not exist.
               | 
               | It's an argument against believing without evidence, not
               | for believing without evidence.
        
               | karaterobot wrote:
               | My comment was that I was not convinced of the argument
               | the article made, not that I was convinced the opposite
               | was true.
        
               | ImPostingOnHN wrote:
               | The article doesn't make any arguments, it simply
               | examines the arguments made by others, and concludes that
               | those arguments aren't convincing enough to conclude the
               | myth is true (and thus we fall back to the default: that
               | the myth is false)
        
           | bluGill wrote:
           | Even if you can prove it true in some specific castle that
           | doesn't not mean it is true for all. Maybe other castles just
           | copied the one where it was - often type of thing is done in
           | architecture without realizing why, and so one castle built
           | for fighting on stairs was copied in others without the other
           | features that make fighting on stairs possible. (Or maybe the
           | first was built for fighting on stairs, but after it was
           | built practice proved it was still a bad idea - lots of
           | variations on this idea).
        
         | [deleted]
        
         | empath-nirvana wrote:
         | > To be clear, this article does not attempt to explain why 70%
         | of stairs were built clockwise
         | 
         | I wonder if it's easier for right handed masons to build a
         | staircase in a particular chirality. What percentage of modern
         | staircases are built in a particular direction?
        
         | marcellus23 wrote:
         | I think the slam dunk against the myth is simply that there's
         | no evidence for it at all. If you have no primary sources or
         | archaeological evidence, and the only "source" is tour guides,
         | then there's no reason to believe it.
         | 
         | It might be true or it might not, but talking about it as if
         | it's definitely true is simply wrong.
        
           | [deleted]
        
           | jjk166 wrote:
           | There's no evidence for an alternative either. We simply
           | don't have surviving documents that talk about the logic of
           | why staircases were built that way, which is hardly
           | surprising given that even nowadays when books are
           | dramatically cheaper to produce, architects don't tend to
           | write down the logic they use when designing the details of
           | functional structures.
           | 
           | The combat explanation fits the evidence as well as anything
           | else. Perhaps it's not proven to be true, but it's certainly
           | not proven to be false.
        
             | marcellus23 wrote:
             | I don't see anything in your comment that contradicts what
             | I said:
             | 
             | > It might be true or it might not, but talking about it as
             | if it's definitely true is simply wrong.
        
         | whall6 wrote:
         | I think all the article is arguing is not to just accept that
         | explanation as fact. There is no conclusive evidence that this
         | is the reason stairs were built this way.
        
         | onlyrealcuzzo wrote:
         | I'd imagine they were built in a direction without a ton of
         | thought, and it's not really surprising to me that if you
         | basically flip a coin - 70% of them landed one way.
         | 
         | If the staircase happens to be on one side of the building, it
         | would be better to orient it one way - based on how the windows
         | would work - for example.
         | 
         | If the staircase is against another busy entryway - it might be
         | better to have the stairs go one way or the other, etc
        
           | wizofaus wrote:
           | If there are several thousand such towers in Europe, then
           | chance of 70% of them all being clockwise due to use of coin
           | flips seems unimaginably small. More likely the first one
           | happened to built that way and most others copied that until
           | someone wondered if you couldn't go the other way instead. Or
           | maybe it is connected to handedness in some other way (easier
           | to draw the design? To lay the stone work? Traditions around
           | who should pass who and how if somebody going up encounters
           | somebody coming down? Who knows...)
        
             | Aerroon wrote:
             | I think it would be more likely that the staircase fit
             | better going one direction than the other. Eg taking the
             | most used path to the staircase and going straight onto the
             | stairs vs having to do a 90 degree turn before you can step
             | on the stairs.
        
               | notahacker wrote:
               | It seems unlikely that random chance would lead to a
               | 70/30 ratio for "best fit" either, so that just seems to
               | be moving the phenomenon that needs explanation to
               | _layouts around stairwells_ , which certainly weren't
               | standardised in the medieval era.
               | 
               | The ratio of staircases in Norman castles was more like
               | 20:1 which is a ratio even more in need of a non-chance
               | explanation; the greater numbers of anticlockwise
               | staircases came later, when coincidentally or otherwise
               | individual towers were less important to the overall
               | defensive scheme
        
           | idiotsecant wrote:
           | I am not a medieval stonemason but these were lifelong
           | craftsmen and I doubt they did it without a lot of thought.
           | They did it with one specific thought it their mind I
           | suspect, it was the way that they were most familiar with
           | doing it so it was the fastest / easier / cheapest way to do
           | it! The same reason any modern craftsman does quite a lot of
           | things.
        
             | JumpCrisscross wrote:
             | > _these were lifelong craftsmen and I doubt they did it
             | without a lot of thought_
             | 
             | There are _so_ many things that could bias this result.
             | Maybe it 's easier to craft in one direction. Perhaps,
             | north of the equator, castles tended to be constructed in
             | certain orientations, with the windowless stairwells
             | tending towards one side versus another. Altogether, there
             | is no reason to prefer the myth over any of those
             | hypotheses--they each have no evidence.
        
             | jethro_tell wrote:
             | I'd like to see that 70% distribution mapped out against
             | corner adjacency. As in, if I have a square room [ ] and I
             | put a stairway on the right wall in the bottom corner
             | there, there is a good chance I'm going to go counter
             | clockwise, but if I put it on the right top, I'll go
             | clockwise. I feel like the general flow of a room needs to
             | be mapped out on this as well to get the full context.
        
           | kdmccormick wrote:
           | Flipping a coin 1000 times and getting >=700 heads has a
           | ~1/10^24 probability.
           | 
           | There's got to be a reason, even if it was as simple as "it
           | was arbitrarily chosen and then became standard practice."
        
             | bluGill wrote:
             | But just that in some direction maters for some reason
             | (layout of the castle forced a direction and thus this
             | works out to random chance?), and the rest was just what
             | the mason felt like building (default to right handed?).
             | You can come up with your own story about why direction
             | would matter, and why for the rest there would/would not be
             | a bias in direction. Then play with how random each one is
             | to get the 70/30 percentage split.
        
           | canadianfella wrote:
           | If it was up to a coin flip, it wouldn't be 70 percent.
        
       | civilitty wrote:
       | The source mentioned in TFA is much better, with more photos and
       | original content:
       | https://talesoftimesforgotten.com/2019/12/18/no-medieval-sta...
        
       | TheRealPomax wrote:
       | But did staircases going into basements go clockwise?
        
         | sethammons wrote:
         | There we go; now something to falsify against. If the left or
         | right is a defensive choice, we should see the reverse
         | handedness defending attackers going down. Great point.
        
       | some_random wrote:
       | I'm not actually convinced, there's been a disconnect between the
       | theory of war and the reality for as long as there's been war.
       | Just because you'd never actually want to fight on a staircase
       | doesn't mean that money and thought didn't go into defending a
       | staircase from its middle. How many militaries today still issue
       | bayonets to foot soldiers and handguns to rear line officers?
        
         | samus wrote:
         | A modern bayonet is basically a combat knife, not a single-use
         | item. Even though it has become rare, it is occasionally
         | deployed.
         | 
         | Officers simply retain their handguns when they get promoted
         | into rear line positions; no special accommodation is required.
        
       | pagekicker wrote:
       | This article is not very good, notably, it is almost all
       | guessing, no evidence.
       | 
       | An explanation that I would have found plausible: building stairs
       | clockwise is cheaper somehow.
        
         | JdeBP wrote:
         | The irony is that you would have found the original proposition
         | of the hypothesis, by Theodore Andrea Cook in 1903, to be
         | _exactly the same thing_. Cook presented zero evidence, clearly
         | was originating the hypothesis, and made it up from whole
         | cloth.
         | 
         | Xe was a sports writer and art critic, not a historian,
         | moreover.
         | 
         | It's a half-paragraph aside in a book entitled _Spirals in
         | Nature and Art_, using words like "would" and "probable". And
         | after 120 years of uncritical repetition and amplification,
         | here we are.
        
       | cushpush wrote:
       | Really fun question! Let's investigate chirality in all its
       | manifestations, natural and humanmade.
        
         | JdeBP wrote:
         | Theodore Andrea Cook did, writing _Spirals in Nature and Art_
         | in 1903 and _The Curves of Life_ in 1914. Unfortunately, we are
         | here fighting the fallout 120 years later, as xe is the source
         | of this very myth.
        
       | sixothree wrote:
       | Clockwise upward staircases do actually have one advantage (in
       | certain locales). Going upwards your forward travel distance is
       | less than going downwards. This is assuming people generally walk
       | on the right hand side. It just feels easier to traverse stairs
       | as close to the inside as possible.
        
         | watwut wrote:
         | We walk on the right side, because of cars.
        
           | [deleted]
        
         | Someone wrote:
         | > It just feels easier to traverse stairs as close to the
         | inside as possible.
         | 
         | I would expect that depends on the design of the spiral
         | staircase.
         | 
         | In a spiral staircase, you want to go up about 3 meters in a
         | 360deg turn because you need a bit over 2m of headroom and some
         | space for the stair itself.
         | 
         | That means that, 1m away from the center of the staircase, the
         | slope will be about 50%. The ideal staircase has more or less
         | "step width + twice the step height = 63cm" [1], so that would
         | give a good step width of 31cm and a step height of 16cm.
         | 
         | However, 2m away from the center, that same stair would have a
         | slope of about 25%, and the ideal step would be 41cm wide and
         | 11cm high or thereabouts.
         | 
         | 3m from the center you'd have a 16% slope, and the ideal step
         | would be 45 cm wide, 8cm high, etc.
         | 
         | Now, in 'standard' designs [2], step height can't change with
         | distance to the center, so the designer has to pick one, and
         | thus has control over the distance from the center where it's
         | easiest to step.
         | 
         | [1] https://www.practicalarchitecture.com/blog/the-geometry-
         | of-a.... Of course, that's a heuristic, and the ideal will be
         | different for different persons, but what's important is that
         | simply scaling up a staircase in order to get wider steps is
         | not a good idea.
         | 
         | [2] very wide stairs can and sometimes do have steps that are
         | sloping upwards. I don't think these are non-standard, but
         | can't think of a better word now.
        
           | Scarblac wrote:
           | I don't think spiral staircases generally get even 1m wide,
           | it's not trivial for two people going in opposite directions
           | to pass each other. You walk on the middle of the step as
           | there isn't much room to the left or right to go to.
        
         | JackFr wrote:
         | Actually more dangerous traveling downward on the inside, where
         | a small misstep will have you miss 2-3 treads, as opposed to
         | the outside where the same misstep won't have you miss any.
        
         | afterburner wrote:
         | I don't think there was so much traffic on these stairs that
         | you ended up forced to one side the whole way.
         | 
         | The forward distance travelled is also trivial in terms of
         | effort compared to the height displacement upward. Most people
         | can walk for 10 minutes without breaking a sweat, but way fewer
         | would feel fine walking up stairs for 10 minutes.
         | 
         | Not to mention, you can simply have a convention that the
         | downward walker on a spiral staircase favour whichever side is
         | best.
        
         | m463 wrote:
         | I bet there is one way to climb that is easier than the other.
         | 
         | Being right-footed, I can do cross-over turns while ice-skating
         | in one direction MUCH easier than the other.
         | 
         | However, not sure whether that translates to clockwise or
         | counter-clockwise stairs being easier without trying it.
         | 
         | maybe it would be counter-clockwise? Right foot travels
         | further?
        
       | OrvalWintermute wrote:
       | > Castle builders knew that it didn't really make a huge
       | difference which way the stairs go, they're not suitable for
       | fighting at all, neither party has a lot of space to wield those
       | long, pointy, sharp weapons.
       | 
       | This is written by someone without experience in hand to hand
       | combat as many weapons were blunt (like a mace or club) and a
       | rondel dagger in an unarmored spot is far more difficult to parry
       | than a sword. Speaking of which, a rondel dagger was specifically
       | intended for grappling situations. Thrusting weapons were in many
       | cases preferred for tight quarters combat although there are
       | slashing weapons specifically designed for tight quarters combat
       | as well. Sword variants like longer greatswords specifically
       | designed vs. halbred or pike formations were not ideal for close
       | quarters, but there were several short sword types
       | 
       | Even in more ancient times, weapons such as the Sica, from which
       | we get the word sicario, were well known as a tool used in
       | gladiatorial combat, and in the Judean wars. Additionally, the
       | gladius wielded with the large shield, the scutum, was only an 18
       | inch short sword. Short because it was ideal for close quarters
       | fighting via a thrust against other heavy infantry.
        
       | im3w1l wrote:
       | Something I would like to know: Do chirality statistics differ
       | between castles and other buildings from the same era?
        
       | legitster wrote:
       | This explanation has always seemed a bit daft to me.
       | 
       | > If it had been common knowledge among castle builders, then why
       | are there still quite a lot (about 30%) of castles with counter-
       | clockwise staircases?
       | 
       | AKA it's almost surely just a builder's preference probably
       | stemming from their handedness.
        
       | rdtsc wrote:
       | Fighting is fun to talk about but most of the time people didn't
       | fight on the stairs, they, unsurprisingly, simply climbed up and
       | down on them. So, maybe it's more comfortable to walk up the
       | stairs that way? People are mostly right footed (60% as per [1]),
       | so perhaps there is something about having the stronger right
       | foot where the stairs are narrower when going up.
       | 
       | [1] https://www.psychologytoday.com/us/blog/the-asymmetric-
       | brain...
        
         | hutzlibu wrote:
         | Ah, but going down is more tricky than up, so you want the
         | strong foot on the slim side rather in this case.
        
           | wizofaus wrote:
           | I have to admit I had that thought - if I needed to get down
           | a narrow staircase in a hurry, I'd prefer if it were anti-
           | clockwise. But apparently another competing theory is that
           | clockwise staircases allow people to put their right hand
           | against the wall for balance/safety... implying if they had
           | anything to carry (including a lamp!) they'd prefer to do so
           | in their left hand, which isn't too convincing either. But in
           | fact on further consideration, the fact that if you have
           | something largish to carry, you'd probably want it on the
           | wider side, and would be more likely you'd carry it in your
           | right hand, might have something going for it...though I'm
           | not sure why that would be obviously more so going down than
           | going up (and logically I'd expect more things would be
           | carried up from the ground floor than v/v, particularly
           | shortly after building the castle. From the upper floor you
           | can discard used/broken objects by tossing them over the
           | side!).
        
             | qup wrote:
             | Maybe the castle with both was doing an A/B test
        
             | usrusr wrote:
             | I wonder what the etiquette for oncoming traffic was, those
             | spiral staircases with a central spine aren't really
             | walkable anywhere but at the outer wall.
             | 
             | Whoever has to step to the spine side would probably want a
             | hand on the spine, palm making contact from the uphill side
             | no matter wether facing up or down. So for someone uphill,
             | the spine contact would be made with the outside hand (arm
             | crossing in front), for someone downhill with the inside
             | hand. On a clockwise staircase, this would leave the right
             | hand comfortably idle for candle, tool or whatever the
             | person deferring to (presumably higher ranking?) oncoming
             | traffic on the wall side is carrying.
        
             | javcasas wrote:
             | I don't think going down was a priority. When you are under
             | attack, you want your archers to rush up to the walls, with
             | some extra fighters for good measure, and you don't want
             | them to go down until the enemy has decided to leave. At
             | that point, the speed of your archers going down doesn't
             | matter much.
        
       | alastairp wrote:
       | Another anecdotal description of old staircases that I've heard
       | of before is from Burgos castle in Spain, where (it's said) that
       | the stairs to the bottom of the well change direction half way
       | down to prevent you from getting too dizzy [1]
       | 
       | > Se accede al interior por unas escaleras de caracol. Para
       | evitar el mareo, los 4 primeros tramos se hacen en el sentido de
       | las agujas del reloj y los dos ultimos tramos en sentido
       | contrario.
       | 
       | [1] https://rutasparatodaslasedades.blogspot.com/2019/07/el-
       | cast...
        
       | jameshart wrote:
       | Similar article discussed previously:
       | https://news.ycombinator.com/item?id=29274875
        
       | wizofaus wrote:
       | Were staircases built around the same time but in non-
       | strategic/non-fortified buildings (private manors etc.) notably
       | different? Or were spiral staircases only built in circular
       | towers that existed primarily for defence? Presumably the
       | narrowness was largely due to the difficulty of being a strong
       | enough tower with a wider radius.
        
       | YuccaGloriosa wrote:
       | I often notice comments made regarding ancient or historical
       | locations and civilisations, when discussed by a historian in a
       | documentary, often seem to be opinions based on pretty flimsy
       | evidence. In some cases no evidence at all, just things could be
       | likely maybe possibly. Relying on the fact that there's no
       | written evidence for or against any claim.
        
         | watwut wrote:
         | You expect pop documentaries to contain evidence? I do not mean
         | it as snark, it is just that evidence is something popular
         | entertainment ia not even supposed to have.
        
         | [deleted]
        
         | kibwen wrote:
         | According to the OP, there is written evidence for it, from the
         | Victorian era, which was 400 years after cannons made castles
         | obsolete. It's hard to fault modern historians too much if
         | they're simply trusting the old records to be accurate. Or as
         | we say in computer science: garbage in, garbage out.
        
           | pmichaud wrote:
           | > It's hard to fault modern historians too much if they're
           | simply trusting the old records to be accurate.
           | 
           | Basically the entire job of a historian is to determine the
           | credibility of old sources, so they can interpret all the
           | data and come to the most accurate conclusion about what
           | happened.
        
             | 221qqwe wrote:
             | > credibility of old sources
             | 
             | Unsubstantiated conjecture by Victorian historians
             | shouldn't really be treated as a "source" in the first
             | place by actual historians.
        
             | [deleted]
        
           | gwern wrote:
           | If you click through, you can see there's no 'evidence'
           | there. He simply offhandedly, in a sentence or two, makes the
           | same speculation about fighting, with no sources, and the
           | whole discussion of staircases in general is based on only 2
           | named examples. Chesterton's fence is satisfied: he knew no
           | more than we did.
        
           | JdeBP wrote:
           | A few points.
           | 
           | Theodore Andrea Cook wasn't a historian. Xe was a writer for
           | the Daily Telegraph, amongst other things, who wrote about
           | sports such as fencing and rowing; and who was also an art
           | critic.
           | 
           | Theodore Andrea Cook wasn't writing in the Victorian Era.
           | _Spirals in Nature and Art_ was a 20th century work, in the
           | Edwardian Era. _The Curves of Life_ was from the subsequent
           | Georgian Era.
           | 
           | Theodore Andrea Cook is the earliest person found espousing
           | this hypothesis. This is, as far as anyone has determined,
           | Theodore Andrea Cook's own original hypothesis, based upon
           | _zero_ evidence. That is certainly what the text of _Spirals_
           | implies.
        
         | wnissen wrote:
         | Yes, it would take not just a real historian, but someone who
         | had done research, to answer this question. Having been up and
         | down a few of those, it certainly seems more than just
         | plausible to me, even taking into account the numerous recorded
         | sieges. On the other hand it is also true that spears and
         | shields play a much greater role than swords. Hard to imagine
         | wielding a full-sized shield, let alone a spear, in one of
         | those staircases, though!
        
           | Tao3300 wrote:
           | Fighting on the stairs would be kinda silly. Better to wait
           | outside the doorway so that after your attackers are done
           | running up the stairs with armor and weapons, you and your
           | pals are waiting there at the choke point to layeth the
           | smacketh down. The only real benefit to fighting on the
           | stairs is that you still effectively impede progress if
           | you're dead.
        
             | the_af wrote:
             | Exactly, fighting on the stairs is pointless.
             | 
             | If you are the attacking army, just wait it out. You've won
             | the siege, and any defenders up the stairs will have to
             | either come down or starve to death. Why risk attacking _up
             | the stairs_?
        
               | vidanay wrote:
               | If you're at the bottom of the stairs, stuff the stairs
               | full of firewood (tables, chairs, dressers, etc) and
               | light it.
        
               | CydeWeys wrote:
               | Yeah, just burn/smoke out the defenders. If you're
               | already in the bottom of the building it's over, just a
               | matter of time when. You can also take the castle apart
               | and cause it to collapse.
        
             | dylan604 wrote:
             | what happens if you're running down the stairs and come
             | upon the attackers on the way down?
        
               | the_af wrote:
               | Die? Surrender? If attackers have stormed the castle and
               | are running up the stairs all is presumably lost anyway?
        
               | dylan604 wrote:
               | If Errol Flynn could do it, then surely, everyone can do
               | it
        
               | the_af wrote:
               | It's safe to assume if Errol is on your side, you've won.
        
               | dylan604 wrote:
               | But this goes against if you're down to defending in the
               | stairwells, you've already lost.
        
               | the_af wrote:
               | Let me fix it: _if_ you are going down _but_ you do not
               | have Errol in your ranks, you 've lost?
        
           | Analemma_ wrote:
           | I think the bigger point from the article is that by the time
           | people are fighting hand-to-hand in the tower stairwells, the
           | defenders have already well and truly lost: comeback from
           | such a state was probably impossible (and if the walls were
           | breached the defenders would almost certainly have
           | surrendered rather than fought to the last man). So it
           | wouldn't have really made sense to design things for this
           | possibility.
        
             | jvanderbot wrote:
             | This comment is a perfect example of GGP's problem with
             | historical analysis.
             | 
             | As is the nearly-exactly comment in TFA:
             | 
             | > Frankly, if you find yourself in this position the castle
             | is probably already lost.
             | 
             | It's conjecture all the way down.
        
               | qwytw wrote:
               | > It's conjecture
               | 
               | Just like the entire staircase argument?
               | 
               | Except that we actually know that:
               | 
               | > Frankly, if you find yourself in this position the
               | castle is probably already lost.
               | 
               | Was true in almost all cases.
        
             | ramblenode wrote:
             | That's not a good counter-explanation.
             | 
             | A castle staircase takes a lot of time and effort to build.
             | Choosing to build the staircase in one direction or the
             | other has negligible cost. If there is even a slight or
             | possible advantage to one direction then it would make
             | sense to build it that way.
             | 
             | Defense in depth.
        
               | the_af wrote:
               | > _If there is even a slight or possible advantage to one
               | direction then it would make sense to build it that way_
               | 
               | If it's true that the battle at this point is lost for
               | the defenders -- and known history indicates this is so
               | -- then why would the builders choose directions based on
               | this extremely unlikely scenario, instead of on just
               | about any other consideration (aesthetic, practical, or
               | even random)?
        
               | lazide wrote:
               | Why does the USMC issue bayonets still?
        
               | qwytw wrote:
               | Because it's a multi-purpose utility knife that can also
               | optionally be mounted on a rifle?
               | 
               | Having a knife might be useful in various situations even
               | outside combat as far as I know.
        
               | the_af wrote:
               | I've honestly no idea.
               | 
               | I'll take a stab at guessing (mind you, this is blind
               | guessing, happy to be corrected!): the USMC still issue
               | bayonets because of both tradition, which is important to
               | the military, and also because they are actually useful
               | in close quarters battle, which still occurs on occasion,
               | such as in urban warfare and house-to-house combat
               | clearing, etc. The likelihood of having to use a
               | bayonet/knife in modern CQB is probably significantly
               | higher than the likelihood of medieval defenders
               | recovering from an enemy army that has stormed their
               | castle.
        
               | notahacker wrote:
               | Yeah.
               | 
               | For perspective, Norman keeps were often built with a
               | large internal cross wall, so even if troops made it
               | through the stair door and swarmed into the room they'd
               | still have to fight their way into the other half of the
               | floor. By the stage these expensive and space consuming
               | walls were defensively relevant, defenders would have
               | already lost outer walls, viable long-term food and water
               | supplies and much of the garrison defending it... and any
               | real chance of holding out. But an invading army would
               | still lose more men storming it; so it functioned as a
               | deterrent.
               | 
               | I've heard this "it's a myth" argument before, but 70% of
               | staircases is quite a _large_ proportion of staircases
               | spiralling in a particular direction which would offer
               | the defender a marginal advantage to be pure coincidence.
               | Particularly when the ratio of clockwise to anticlockwise
               | staircases in _Norman_ castles was about 20:1; it was
               | later generations of castle of builders who added many
               | more anticlockwise stairwells, in an era when individual
               | tower defence was less importance, and builders may have
               | simply forgotten or come to doubt arguments about the
               | defensive advantages of clockwise spirals (the blog 's
               | arguments for why spiral staircase defence is rubbish
               | work here of course!). Contemporary cathedrals which were
               | not at all defensible tended to build clockwise and
               | anticlockwise spiral staircases as matching pairs, so it
               | wasn't like there was some other sort of massive aversion
               | to stairs in a particular direction.
        
               | Tao3300 wrote:
               | It's a really good explanation. Castle sieges were big
               | events, so historically we know the outcomes. Nearly 100%
               | of the time, the garrison has already surrendered if it's
               | this bad. Medieval sieges come in three major flavors:
               | ones where you sneak in, ones where you bombard the
               | fortification, and ones where you don't let anything in
               | or out and you wait until they give up.
        
               | ramblenode wrote:
               | If you examine a military you will find volumes of plans
               | for incredibly unlikely situations. Once you have
               | addressed all the likely and significant threats, you
               | don't just stop planning--at least not any good military.
               | 
               | Saying that castle sieges didn't tend to involve stairway
               | fights doesn't imply that stairways wouldn't have had
               | defensive measures built in. That is post-hoc
               | rationalization.
        
               | 221qqwe wrote:
               | > That is post-hoc rationalization.
               | 
               | You're asking to a disprove a purely(?) speculative
               | claim, though.
        
               | prewett wrote:
               | Any defenders defending a tower are obviously above the
               | ground floor, which is where access to food and water is.
               | So why bother fighting up the stairway, when you can just
               | block all the downstairs exits? The castle's defenses are
               | the walls; if attackers are in a position to go up the
               | stairs then the castle's defenses have failed, and the
               | only defense left is the manpower of the defenders. So
               | instead of being "besieged" up their towers, the only
               | realistic strategy the defenders have is to come down
               | from the towers and join the melee. Or just surrender,
               | because the attackers have an army and the castles only
               | had dozens of defenders (if that). What tactical
               | situation do you have in mind where the success of the
               | attack depends on success in a staircase battle?
        
               | wongarsu wrote:
               | Every day the attackers besiege you is one they have to
               | defend against potential counterattacks from your allies.
               | And even if your castle falls you might buy your empire
               | time to raise a bigger army and rally more allies in
               | order to win the next bigger war. Delaying enemies could
               | be an important function of castles.
        
               | ramblenode wrote:
               | Defense in depth isn's about justifying in advance how
               | every measure will win the battle; it's about giving
               | yourself as many small, incremental advantages as
               | possible so that the odds steadily tick up in your favor.
               | Battles are famously difficult to predict so every
               | advantage is sought, and even small advantages can have
               | multiplier effects.
        
               | CydeWeys wrote:
               | An interstate takes a lot of time and effort to build.
               | And yet which side you drive on doesn't matter; it simply
               | needs to be consistent with all the other roads you're
               | connected to. There are plenty of countries that, through
               | historical happenstance, drive on the opposite side of
               | the road, and it's fine.
               | 
               | So in other words, just because the staircases take a lot
               | of time and effort to build, simply means that having the
               | staircase itself is important, not necessarily that its
               | chirality is important. It has to have a chirality but it
               | may well not matter which one, just like roads.
        
               | ramblenode wrote:
               | Your example misses the point.
               | 
               | If there were evidence that driving on the right side or
               | left side of the road slightly reduces car accidents and
               | a country with previously no roads or cars began planning
               | to automotize the country, then, all things considered,
               | it would make sense to have people drive in the lane with
               | a slightly reduced fatality rate.
               | 
               | If there are two choices where one presents a slight
               | advantage but no additional cost then a rational actor
               | will go with that choice.
        
               | qwytw wrote:
               | The event has to occur relatively frequently for that
               | slight advantage to become statistically noticeable.
               | Direct assaults on castles with hand-to-hand combat
               | occurring in stairwells were extremely rare as far as we
               | know.
        
               | gowld wrote:
               | Where's the contemporary research to determine which
               | direction has advantage?
        
             | Cass wrote:
             | That's a bizarre line of thought to me. If you build an
             | expensive structure for fortification, you don't usually
             | get to the interior design and then go "Oh fuck it, this
             | extra safety measure wouldn't cost anything, but if they've
             | got this far we might as well surrender, so let's not
             | bother."
             | 
             | Going by that logic, the president's bunker under the
             | pentagon would've been built without a lock. After all,
             | people don't usually have to physically drag a country's
             | leader out of their locked bunker, right? By the time
             | anyone's knocking on that door, usually the war is lost and
             | the country has surrendered.
             | 
             | And yet, if you're designing for defense, why NOT take such
             | a cheap and easy countermeasure as putting a lock on the
             | door or choosing the more defensible way to spiral your
             | staircase? You might want to buy a few more minutes to
             | negotiate in a desperate situation; you might want at least
             | the option of taking that futile last stand; you might be
             | facing not an invading army but a single lunatic with a
             | sword who snuck past the outer guards.
        
             | whiw wrote:
             | I imagine that it would be more difficult to gain entry to
             | an upper floor (at the top of a narrow staircase so single-
             | file attackers) and a sturdy door with a couple of guards
             | outside, than it would be to gain entry to rooms on the
             | same level. Perhaps the women were tucked away on the upper
             | floors, in relative safety.
        
         | catlover76 wrote:
         | A lot like evolutionary psychology; it seems like a reasonable
         | explanation or story and is supported by at least some
         | circumstantial evidence, so it _must_ have been the way things
         | were
        
         | duxup wrote:
         | I love me some history information, documentaries, and etc. But
         | yeah I get strongly allergic to stuff where suddenly I wonder
         | "Wait did you just logic that out in your head? Like there's no
         | basis for that other than you observing how the thing /
         | situation is?"
         | 
         | I'm sure it has been an issue forever but online especially it
         | seems painful how much of that information there is.
        
           | alexpotato wrote:
           | My favorite version of the logic it out:
           | 
           | "People asked me if this tribe was originally from this area
           | or if they migrated here.
           | 
           | I always say: clearly they were from here. The weather is so
           | bad around these parts, who would choose to move here from
           | somewhere else?"
           | 
           | - German historian
        
         | groestl wrote:
         | Along these lines, a well established rule in Archaeology: "Was
         | man nicht erklaren kann, sieht man gleich als kultisch an"
         | (what cannot be explained, is immediately perceived as
         | religious)
        
           | pc86 wrote:
           | "That is either an incense dispenser, or a ceremonial ...
           | sarcophagus."
           | 
           | "My German is pre-industrial, and mostly religious."
        
         | bobthepanda wrote:
         | Even if there is written evidence, nearly all past written
         | information is also difficult to verify, and writers in the
         | past were not necessarily unbiased or above lying and
         | distortion.
        
       | jjk166 wrote:
       | Going through the cited sources, I'm more convinced the
       | defender's advantage theory is right than before I started.
       | 
       | First the claim that stairs would not be optimized for combat
       | because fighting on stairs was undesirable holds no weight.
       | Castles were designed with many layers of defense - it was
       | entirely expected that large sections of a castle would be lost
       | and the defenders would continue to hold out in other sections,
       | bitterly holding chokepoints. From murder holes to
       | machicolations, every inch of castles were optimized defense.
       | Even if in practice defenders would prefer not to fight on a
       | stairway, if all else were equal (and it's hard to think of
       | something more arbitrary than which way the stones are flipped),
       | why wouldn't they go with the option that potentially could be
       | helpful instead of potentially aiding an attacker?
       | 
       | Next, the argument that "not all castles had clockwise
       | staircases" seems to be an own-goal. During the time periods when
       | having to defend a castle was likely, staircases were
       | overwhelmingly clockwise. It is only in the late middle ages when
       | defense became much less of a priority that anticlockwise stair
       | cases start gaining popularity, and the later it gets the more
       | common anticlockwise stairs become. If there were some non-
       | military utilitarian reason for the choice, such as making it
       | easier for someone to steady themselves or carry lanterns,
       | presumably that need would remain. If the choice were non-
       | utilitarian from the beginning, why the initial disparity? No
       | doubt the designers of these buildings had multiple competing
       | concerns, including aesthetics and convenience, but clearly the
       | balance shifted. Examples of anticlockwise stairways were common
       | in structures not intended for defense in earlier structures,
       | which means the shift was not technological and further makes
       | non-military utilitarian requirements unlikely.
       | 
       | Obviously it would be nice if we had more surviving sources from
       | the time period, but it's hard to imagine any other theory
       | fitting the data so well.
        
         | [deleted]
        
       | btbuildem wrote:
       | I'm a little disappointed that the article's author didn't make a
       | counter-claim, or at least speculate on what some other reasons
       | may have been.
       | 
       | I'll throw my idea in: most spiral staircases turn counter-
       | clockwise, because they were notoriously dark / badly lit, so one
       | had to hold a torch or a lamp while traversing them. Since
       | majority of people are right-handed, stands to reason a person
       | would be holding the source of light in their right hand, and
       | hold on to the hand-rail (or wall) with their left. You'd
       | naturally want to lean on the outside wall of the staircase, as
       | the stair treads there are wider than near the centre of the
       | spiral.
       | 
       | QED!
       | 
       | (let me know if you spot the flaw in my logic)
        
         | [deleted]
        
         | Levitating wrote:
         | If I visualize walking up a staircase, I'd much prefer them
         | clockwise so that I can touch the center with my right hand
         | when walking up, for some additional stability.
         | 
         | Also, much staircases I know are clockwise. Which is also my
         | theory for this myth, most staircases were build clockwise
         | simply because most were already build clockwise. It fits
         | Okkam's razor.
        
         | topspin wrote:
         | The flaw is whatever x-wise you pick, you have the torch in the
         | "wrong" hand either going up or coming down. Also, hand rails
         | weren't a thing in most medieval staircases; you were expected
         | to just not fall, and when you did there was no one to sue.
        
         | jedberg wrote:
         | That only applies going up.
        
           | illiac786 wrote:
           | going down you mean ;)
           | 
           | I would counter argue that one may prefer to hold the ramp in
           | one's strong hand...
        
           | tarboreus wrote:
           | And if you've been on these stairs you know that down is the
           | hard part.
        
       | [deleted]
        
       | gretch wrote:
       | My own no-basis 30 second gun theory - what if they are all the
       | same way because one guy who was really good at making them
       | passed the knowledge down that way. Then everyone else followed
       | from that one teaching and never bothered flipping it. It wasn't
       | better, it just won the coin flip
        
         | teaearlgraycold wrote:
         | My own guess - there's already a bias towards right handedness.
         | I assume that is related. I don't know how these staircases
         | were built but it may be that it's slightly easier to build
         | these staircases for right-handed people. And then maybe 30% of
         | builders were left handed or some minority of the time the
         | architect wanted to prioritize symmetry with another tower.
        
         | mmanfrin wrote:
         | You can go a step further and (maybe, I acknowledge this is a
         | stretch) apply some evolutionary pressure in that it gave
         | defensive advantages they didn't think about and so the people
         | whose castles this guy/his students built retained their wealth
         | and built more castles from the same building style.
        
           | AlecSchueler wrote:
           | I thought the current thinking was that no battle would ever
           | come down to fighting on the stairway. If someone has already
           | made it through all of your castle's defences to even be on
           | the stairs, then the battle is over.
        
             | dexwiz wrote:
             | And if you were defining a stairway, a spear is much better
             | than a sword. Stand at the top, poke down.
        
             | autokad wrote:
             | this comes off as video game logic. 'well I lost, may as
             | well hit the reset button'.
             | 
             | Except when you are going to die, even if the extra odds
             | seems pointless, you do it. much like WW2 tankers putting
             | sand bags on their tank.
        
           | slim wrote:
           | also, when the number of stairs built that way reaches
           | critical mass, any stair built otherwise will feel awkward
        
             | derekp7 wrote:
             | I recall an interview with someone doing a late night talk
             | show, that they tried putting the guest on the right side
             | of the host but that didn't sit to well with audiences
             | because they were used to seeing the guest on the left
             | side. No reason for it other than that is what the first
             | popular late show did, so everything else followed.
        
             | usrusr wrote:
             | That's what I find most fascinating about the claimed 70/30
             | distribution, I'd either expect something very close to
             | even or far more lopsided.
             | 
             | Perhaps a closer look at the numbers would show a very
             | clear default direction plus a strong priority for symmetry
             | where applicable?
        
               | edgarvaldes wrote:
               | What if the 30 percent are more close in region or time?
        
           | dbrueck wrote:
           | > You can go a _step_ further
           | 
           | I see what you did there.
        
         | [deleted]
        
         | fanf2 wrote:
         | But they aren't all the same, they are 1/3 : 2/3
        
           | lawlessone wrote:
           | Maybe that's the ratio of left and right handedness in
           | medieval staircase builders. i joke.
        
       | Hoasi wrote:
       | Inconclusive.
       | 
       | What if they built right-handed defenders AND left-handed
       | defenders towers?
        
         | digging wrote:
         | The article states that they likely built neither because
         | nobody wants to be fighting for their life 1:1 on a dank
         | staircase with poor visibility. It's actually the much more
         | logical option. Even if attackers are in the stairwell, why
         | wouldn't you retreat to the top where you can accumulate real
         | advantages?
        
         | the_af wrote:
         | Oh, but what if the _attackers_ divided themselves in left-
         | handed and right-handed attack groups, and chose the stairs to
         | attack accordingly?
         | 
         | This is getting silly :P
        
           | NoMoreNicksLeft wrote:
           | I think these staircases evolved to make it impossible for
           | rapey male ducks to impregnate the castles. Ancient sources
           | agree with my theory, so it must be true.
        
           | seabass-labrax wrote:
           | You're right, but now I'm disappointed that this didn't make
           | it into Monty Python and the Holy Grail!
        
       | gooseus wrote:
       | I'm gonna guess it correlates with the handedness of the builder.
       | 
       | As a right-handed person, when I've built spiral towers in games
       | they have been clockwise because when building from the bottom
       | up, clockwise just seems "right".
        
       | jackconsidine wrote:
       | > Sieges often didn't involve much fighting at all, as simply
       | waiting outside the castle till the people inside ran out of
       | water and food was a much easier and less bloody way to win.
       | 
       | Currently reading Plutarch. Twice already he's mentioned sieges
       | where the attackers waited for the besieged to run out of water.
       | The grueling wait is compressed in history.
        
         | marginalia_nu wrote:
         | My favorite siege weirdness is circum- and contravallation.
         | Caesar's seige of Alesia perhaps being one of the better
         | examples. The man built a wall around the already walled
         | fortification of Alesia... then built a wall behind him to keep
         | the besieging army safe from Vercingetorix' allies.
         | 
         | That's a wall around a wall around a wall. Like a frickin'
         | onion.
        
           | catlover76 wrote:
           | Like an ogre, one might say
        
           | jamiek88 wrote:
           | My favorite siege story is Alexander being taunted by
           | islanders who thought themselves immune to being under siege
           | and attacked.
           | 
           | They slowly stopped laughing as they realized the Macedonians
           | were filling in the shore front to make a kilometer long 200m
           | wide causeway to march across.
           | 
           | It did not end well for the island City of Tyre and its
           | inhabitants.
        
         | Animats wrote:
         | > Twice already he's mentioned sieges where the attackers
         | waited for the besieged to run out of water. The grueling wait
         | is compressed in history.
         | 
         | That's happening now in Gaza. Israel has cut off water.
        
       | lwn wrote:
       | I've visited a castle in Germany once, where they had special
       | short swords for defending the staircases. The staircases in that
       | castle were too small to wield a regular sword.
        
         | russdill wrote:
         | Was there period documentation? Or a just so story about short
         | swords?
        
         | Freak_NL wrote:
         | That sounds eerily similar to the myth from the linked article.
         | Although there is a chance that some enterprising blacksmith
         | came up with a clever marketing scheme for those to convince
         | the nobility that they really needed such a set of short
         | swords.
         | 
         | 'Just in case pillagers come up the stairs, and I'll throw in a
         | Zweihander for half the price too, in case your attacker steps
         | out of reach of your regular sword!'.
        
           | akozak wrote:
           | I love this. Naive feudal lords as the historical equivalent
           | to high net worth preppers.
        
             | eproxus wrote:
             | What could be more prepping than building a whole stone
             | castle? It's the historical equivalent of a bunker for most
             | part of modern (and ancient) history
        
               | smsm42 wrote:
               | Building castles to cover captured terrain was pretty
               | common (unless of course there already was one around, in
               | which case you besiege and take it, if you can). Of
               | course, building a stone ond rakes time, so they'd build
               | a temp one first, and then, ic theh manage to keep the
               | territory, update it. So if it's prepping, it's a very
               | common and prudenf version of it.
        
           | smokel wrote:
           | Ehm. The article does not actually give any evidence, so this
           | argument is becoming rather absurd.
        
       | oh_sigh wrote:
       | I wonder if modern spiral staircases but also show the 70/30 R/L
       | bias as well?
        
       | [deleted]
        
       | mtreis86 wrote:
       | People are dominantly right handed, so right hand on the wall.
       | 
       | You need more space under your foot while descending, you only
       | use the ball of your foot while going up.
       | 
       | The stairs are thicker on the outside, so if that is on the right
       | as you descend, the staircase will be counter clockwise.
        
       | majikandy wrote:
       | 70/30 split sounds like there is a reason even if there isn't
       | primary evidence to backup the exact reason. Logically
       | attack/defence sounds like it works and I was certainly able to
       | imagine that on my first tour of a fort when I was young.
        
         | 221qqwe wrote:
         | Or maybe medieval people thought that it's easier to
         | climb/carry stuff up if the stairs go clockwise (or some other
         | mundane reasons)? Maybe architects just designed it that way
         | because that's just how everyone builds castle staircases?
         | Seems much more plausible to me (or at least as plausible..)
         | 
         | > I was certainly able to imagine that on my first tour of a
         | fort when I was young.
         | 
         | Most people visiting medieval castles probably significantly
         | overestimate the frequency of hand to hand combat that might
         | had taken place there (almost never as far as we know).
        
         | notahacker wrote:
         | The scholarly source he links to (which actually agrees with
         | him) notes in passing that for _Norman_ castles, the split wasn
         | 't 70/30, it was more like 95/5....
        
         | bee_rider wrote:
         | I wonder what the split is nowadays. For example I lived in an
         | apartment that had a counter-clockwise stairway, I'm not sure
         | what the landlord's handed was was, but I don't _think_ he
         | designed it around defending against left handed sword-armed
         | attackers.
        
       | EVa5I7bHFq9mnYK wrote:
       | I think people found out that more falls happened while
       | descending than while ascending, so it was more important to have
       | right hand holding the rails at the outer wall when descending.
       | Thus counter-clockwise direction while going down and clockwise
       | when going up.
        
       | jack_riminton wrote:
       | It has no mention of the masons, who had strict codes and rules
       | of thumb and where all the knowledge was passed down in oral form
       | through apprenticeships and quite a lot of secrecy (hence the
       | Freemasons). I'm not sure it proves or disproves the main point,
       | but it's a glaring omission that if investigated could explain it
        
       | hermitcrab wrote:
       | The victorians created a lot of persistent myths:
       | 
       | -vikings with horns on their helmets
       | 
       | -highlanders all wearing tartan
       | 
       | -knights in plate armour not being able to get up if they fell
       | over?
        
         | fsckboy wrote:
         | yes, Vikings with horns on their helmets
         | 
         | https://en.wikipedia.org/wiki/Veks%C3%B8_Helmets (from
         | scandinavia, but a couple thousand years before the Vikings
         | https://en.wikipedia.org/wiki/Nordic_Bronze_Age )
        
       | JP44 wrote:
       | Could it be them optimising their floorplan? Direction of the
       | spiral is based on e.g. the largest possible entry or smallest
       | obstruction(in terms of construction and visually for the rest of
       | the room/castle?
        
       | a-dub wrote:
       | if i were to guess it probably has more to do with left hand side
       | driving semantics which as i understand comes from a prevalence
       | of right-handedness and a norm of posturing the right hand for
       | weapon use.
       | 
       | so, maybe they just adopted the rules of the road, and the
       | legends that come from it.
        
       | renewiltord wrote:
       | A lot of these historic stories are someone's fancy. In Turkey,
       | they'll make up all these stories about wine flasks in Cappadocia
       | that have this hole in the middle. Supposedly the sun must fall
       | through the hole to bless it or something and I can't find any
       | reference to that anywhere. But I wasn't able to find a historian
       | of Turkey and that region to say it definitely _was_ ahistorical.
        
       | redwall_hp wrote:
       | I'll do one better: they weren't built clockwise, as clocks were
       | not available. They were built reverse-widdershins or sunwise.
       | 
       | https://en.wikipedia.org/wiki/Widdershins
        
         | kwyjibo1230 wrote:
         | Wow, so Widdershins is not just a made-up word from Terry
         | Pratchett's Discworld series!
        
           | Tagbert wrote:
           | It seems it goes back a little further than that.
           | 
           | > probably from Middle Low German weddersinnes, literally
           | "against the way"
           | 
           | https://www.etymonline.com/word/widdershins#etymonline_v_799.
           | ..
           | 
           | Basically, this is NOT the way.
        
           | redwall_hp wrote:
           | I'll admit that Discworld is the first place I heard it. It's
           | a perfect example of the sort of idiom authors should think
           | about though, rather than using overly modern terms.
        
         | headstorm wrote:
         | Deosil is the counterpart which means reverse-widdershins or
         | sunwise, mentioned in your link.
        
         | INTPenis wrote:
         | I love the word sunwise. In Swedish it's "medsols" and
         | "motsols", sunwise and counter-sunwise respectively.
         | 
         | And speaking of, let's start another myth. Swedes always dance
         | around the christmas tree or maypole sunwise because it's an
         | ancient dance to evoke the sun after months of darkness.
        
           | kwhitefoot wrote:
           | I thought the pole and dance in Sweden was at midsummer. In
           | England it's on Mayday.
        
             | INTPenis wrote:
             | I call it a maypole to relate to foreigners. What would you
             | call the pole? It's actually called a midsommarstang, which
             | means midsummerspole...
        
         | gowld wrote:
         | 'Tis but thy name that is my enemy;
         | 
         | Thou art thyself, though not "clockwise".
         | 
         | What's "clockwise"? It is nor hand, nor pen-
         | 
         | dulum, nor face, nor any other part
         | 
         | Belonging to a clock. O, be some other name!
         | 
         | What's in a name? That which we call a rose
         | 
         | By any other name would smell as sweet;
         | 
         | So "Widdershins" would, were it not "Widdershins" call'd,
         | 
         | Retain that dear perfection which he owes
         | 
         | Without that title. Widdershins, doff thy name,
         | 
         | And for that name which is no part of thee
         | 
         | Take all my turns.
        
         | [deleted]
        
       | [deleted]
        
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