[HN Gopher] A Tesla vehicle using 'Smart Summon' appears to cras...
       ___________________________________________________________________
        
       A Tesla vehicle using 'Smart Summon' appears to crash into a $3.5mm
       private jet
        
       Author : aaronbrethorst
       Score  : 105 points
       Date   : 2022-04-22 19:27 UTC (3 hours ago)
        
 (HTM) web link (www.theverge.com)
 (TXT) w3m dump (www.theverge.com)
        
       | almost_usual wrote:
       | Rich people problems
        
         | amelius wrote:
         | Until it crashes into some poor person's car.
        
           | badwolf wrote:
           | or some poor person.
        
           | toomuchtodo wrote:
           | Tesla owner's insurance or the Tesla owner will pay for it,
           | just as would happen in this case. No different than you
           | leaving the parking brake off and the vehicle rolling down
           | the hill into another car or someone's house.
        
             | amelius wrote:
             | What if the poor person was injured?
        
               | toomuchtodo wrote:
               | Liability coverage.
        
             | [deleted]
        
             | ceejayoz wrote:
             | A plane would be _well_ over most folks ' car insurance
             | limits.
        
               | coolspot wrote:
               | It's not like the whole $3.5MM jet is a write-off.
               | 
               | The hull damage and re-certification should be a fraction
               | of the plane cost.
        
               | _s wrote:
               | Composite fuselage - and the jet engine ($$$) itself sits
               | between the ruddervators ($$$), with the BRS ($$$) just
               | in front - probably the worst place to hit that jet.
               | Easily $1-1.5M.
               | 
               | A wing or the nose would have been far easier to inspect
               | and replace.
        
               | toomuchtodo wrote:
               | We were talking about other cars, not $3.5M jets, in the
               | subthread.
               | 
               | > Until it crashes into some poor person's car.
               | 
               | With that said, Tesla or not, you're going to have a bad
               | time if you hit a private jet with your car at the
               | airport (unless you live in a state where you can just go
               | bankrupt and protect your assets if they attempt to
               | pursue you beyond your insurance limits).
        
             | mannykannot wrote:
             | If they don't drive off before anyone notices.
        
         | yeetsfromhellL2 wrote:
         | Yeah but think of the wealth that could have trickled down to
         | the middle class and eventually the lower class because of that
         | jet ferrying the rich around to distribute their money as they
         | see fit. Any conscious working class person would have thrown
         | themselves in the way of that Tesla in the name of economic
         | justice. The hospital bill would surely have been a crushing
         | financial blow to him or her, and probably left them bankrupt,
         | and also crippled, but what a boon to their class they would
         | have preserved. Perhaps sympathetic workers could have donated
         | to their cause, and to repair and clean the Tesla.
        
           | throwaway743 wrote:
           | /s?
        
       | PawBer wrote:
       | Looks like they didn't teach the model about airplanes.
        
         | sorokod wrote:
         | Perhaps should be a warning on the label. Something like:
         | 
         | "Training corpus did not include airplanes, people in wheel
         | chairs,..."
        
           | lordnacho wrote:
           | Models need to generalize over what they've been shown
           | though. Most people won't learn to drive near an airplane or
           | a wheelchair either, but would have no problem avoiding
           | those.
        
             | trhway wrote:
             | Humans generate general 3d representation of the world. You
             | don't know what this object is, yet you see it's borders.
             | Tesla seems to generate understanding only of the objects
             | that it has already seen.
        
           | rasz wrote:
           | "...any animals, ..."
        
           | twayt wrote:
           | That is going to be an infinitely long warning label
        
             | pessimizer wrote:
             | They can post it on all of your doors as a TOS for leaving
             | the house. If you want to sue, you'll have to prove you
             | climbed out of the window.
        
         | raverbashing wrote:
         | Aggravating edge cases: you use the feature in an environment
         | where not even 0.01% (optimistically) of drivers will drive
        
           | salawat wrote:
           | If your ML was half as generalized as you make it out to be
           | it would not be a problem.
        
           | lm28469 wrote:
           | There are a lot of 0.01% cases when you have 600k+ tesla
           | driving out there... and it's only the beginning
        
         | trhway wrote:
         | I can imagine a PM meeting at Tesla triaging the issues -
         | "severe bug, yet very rare, waiving it for this release."
         | 
         | One can also imagine their modelers populating the synthetic
         | training world with all of the planes right now. Like a "Mria"
         | coming right in front of you on 101, as well as F-35 passing
         | you on the left, and of course Millennium Falcon dropping right
         | on you, and all that happening on a flight deck of huge
         | aircraft carrier.
        
       | hu3 wrote:
       | Insurance call: "Sorry you said you crashed on what?"
        
       | nimbius wrote:
       | summon is the wildest energy. its like handing your keys to a
       | feral racoon on bath salts.
       | 
       | i once had to file a claim after a tesla on summon backed out of
       | its parking space and directly over my motorcycle, crushing it
       | against a barrier wall with such unrelenting force it pushed the
       | cylinder head covers into the gas tank. this claim was a real tit
       | spanner because the owners cut-rate insurance company flat-out
       | refused to cover it since the driver wasnt in the car. it took
       | nearly a year of subrogation but mercifully they settled.
        
         | biggc wrote:
         | > since the driver wasnt in the car.
         | 
         | That's shocking. What does that have to do with liability?
         | Hypothentically if my car's brakes failed while my car was
         | parked, my insurance should cover any damages.
        
         | judge2020 wrote:
         | I wonder if they'd refuse to cover damage from their client's
         | car rolling down a hill in neutral, hitting another car, only
         | because the owner wasn't in it.
        
         | noneeeed wrote:
         | Well that's disturbing. It doesn't bode well for how they are
         | building their self-driving systems. A simple set of ultrasonic
         | reversing sensors would be enough to prevent this.
        
           | judge2020 wrote:
           | The part of the jet it hit was in the air, the ultrasonic
           | sensors are the main way it avoids hitting non-car objects in
           | Smart Summon, and they have those all around the car.
        
             | rasz wrote:
             | Jet crushed the upper windshield right in the spot where
             | Tesla hides its monocular camera cluster.
        
             | throwanem wrote:
             | I feel like there must be some way to detect and avoid
             | objects that occlude space the car intends to occupy but
             | that also don't touch the ground inside that footprint.
        
               | byw wrote:
               | Maybe a lidar would've prevented these types of issues.
        
               | judge2020 wrote:
               | But how often is a car at risk of not clearing something
               | in a parking lot? I don't think they should be adding
               | cost (manufacturing complexity, material/part cost) to
               | specifically handle driving around a runway.
        
               | ipython wrote:
               | Not a Tesla, just a plain old fuckup on my part - I
               | backed into a fan box mounted about 3' off the ground in
               | a parking garage. Was too reliant on cameras and the
               | backup radar- didn't look and boom - nice big crease in
               | my rear panel. So yes this sort of thing is not some sort
               | of crazy edge case only encountered on airport tarmacs.
        
               | ruined wrote:
               | there are no rules about what kind of objects can exist
               | in a parking lot. if they can't account for hanging
               | obstructions, which are actually quite frequent
               | everywhere, they probably should err on the side of "less
               | likely to kill people" and just not offer it.
        
               | Dylan16807 wrote:
               | Other vehicles can be pretty far off the ground
               | sometimes, and while I don't know if summon can avoid
               | those, autopilot sure doesn't.
        
               | [deleted]
        
               | throwanem wrote:
               | I feel like if you need to think about a case like this
               | for its own sake then there may be some more fundamental
               | problem with your approach.
               | 
               | I bet it'd work great on Mars, though. Not a whole lot of
               | airplanes there, now or in the foreseeable future.
        
               | atchoo wrote:
               | Hitting a partially lowered garage door seems the most
               | likely.
        
           | hosh wrote:
           | Tesla is known to play fast and loose with their driver
           | assist and autonomous vehicel tech and insist on avoiding
           | lidar. Waymo and Cruise are a lot more conservative.
           | 
           | As a society, we have not figured out who is liable in cases
           | like this -- the owner or the car company that engineered the
           | AI.
        
             | throwawaycities wrote:
             | > As a society, we have not figured out who is liable in
             | cases like this -- the owner or the car company that
             | engineered the AI.
             | 
             | For the most part none of this is novel to the law.
             | 
             | So long as the owner didn't do anything negligent
             | themselves, then it seems a strong claim of product
             | liability (defective product). It seems there is very
             | little chance of contributory negligence of the owner with
             | this function, unlike crashes in self-drive mode, where the
             | driver was supposed to pay attention and maintain their
             | hands on the wheel, but turns out they were sleeping or in
             | the backseat live streaming.
             | 
             | I do think there should be legislation adopted to protect
             | the victims by giving them a statutory private right of
             | action against both the owner and the car manufacturer to
             | hold them jointly and severally liable for any accident
             | involving self driving vehicles, then in practice the
             | owner/manufacturer (i.e. their insurance companies) to sort
             | out liability.
        
               | veilrap wrote:
               | I've read that Tesla's summon feature requires the user
               | to continually hold down a button on their phone in order
               | to have the car continue its slow progress in driving
               | towards the user.
               | 
               | Assuming that's the case, I would argue that this
               | specific sort of accident is squarely in the domain of
               | the user.
        
             | threeseed wrote:
             | It borders on reckless than Tesla isn't using LiDAR or a
             | similar sensor.
             | 
             | Relying on images only requires you to perfectly identify
             | every object in the scene in order to infer its bounding
             | box. And that's an issue like we see here where you don't
             | expect to see private jets near a Tesla and so it may not
             | be modelled.
             | 
             | With LiDAR, Radar etc. at least they know "something" is
             | there even if they don't know what is.
        
               | SAI_Peregrinus wrote:
               | You shouldn't need to identify objects using images, just
               | that the parallax shift indicates something there.
        
           | csa wrote:
           | Tesla says that the owner is supposed to be able to see the
           | car during all parts of the summon procedure precisely to
           | prevent situations like this. Tesla knows that this system is
           | not perfect.
           | 
           | Fwiw, the best use of summon is simply getting out of a tight
           | parking spot (e.g., some residential garages).
           | 
           | Expecting it to be a valet is ambitious in its current state.
        
         | moralestapia wrote:
         | >this claim was a real tit spanner because the owners cut-rate
         | insurance company flat-out refused to cover it since the driver
         | wasnt in the car
         | 
         | WTF, I'm against self-driving cars now. Glad you're all right.
        
         | throw0101a wrote:
         | > _this claim was a real tit spanner because the owners cut-
         | rate insurance company flat-out refused to cover it since the
         | driver wasnt in the car._
         | 
         | I thought the official dogma was that when self-driving cars
         | were in "auto-mode" the manufacturers would be the parties held
         | responsible/liable and pay for any damages cause by their
         | systems.
        
           | csa wrote:
           | > I thought the official dogma was that when self-driving
           | cars were in "auto-mode" the manufacturers would be the
           | parties held responsible/liable and pay for any damages cause
           | by their systems.
           | 
           | See my response here:
           | 
           | https://news.ycombinator.com/item?id=31129075
           | 
           | tl;dr -- Tesla states the driver is responsible when using
           | this feature.
        
           | tantalor wrote:
           | _forced arbitration has entered the chat_
        
             | t0mas88 wrote:
             | Only in the US, in Europa that wouldn't pass consumer
             | protection laws.
        
         | csa wrote:
         | I'm surprised that it took so long.
         | 
         | Tesla says that the car should be in sight during the whole
         | summon procedure precisely so things like this don't happen.
         | 
         | https://www.tesla.com/ownersmanual/model3/en_us/GUID-6B9A1AE...
         | 
         | "You must maintain a clear line of sight between you and Model
         | 3 and closely monitor the vehicle and its surroundings at all
         | times."
         | 
         | "Smart Summon is a BETA feature. You must continually monitor
         | the vehicle and its surroundings and stay prepared to take
         | immediate action at any time. It is the driver's responsibility
         | to use Smart Summon safely, responsibly, and as intended."
         | 
         | I'm surprised that this was not a slam dunk for your insurance
         | company.
        
       | sabujp wrote:
       | new feature: auto pushback
        
       | ProAm wrote:
       | ETA to fix the airplane: 7 weeks.
       | 
       | ETA to fix the Tesla: 37 weeks.
        
       | mc4ndr3 wrote:
       | Autonomous vehicles present a shining example of why early
       | adoption is risky.
        
       | exabrial wrote:
       | One expensive luxury toy crashes into another expensive luxury
       | toy...
        
         | outworlder wrote:
         | A vision jet is not necessarily a toy. Plenty of companies
         | using them instead of larger aircraft.
        
           | _moof wrote:
           | Can't imagine why. The range on those things is pitiful. A
           | TBM or a PC-12 seems like a much better choice if that's the
           | class of aircraft you're buying.
        
       | RcouF1uZ4gsC wrote:
       | You know how at the airport, they have that tug vehicle that
       | pushes the aircraft out from the gate and into the taxiway?
       | 
       | I think the person was just trying to use their Tesla in the same
       | way. The plane needed to be turned around, and the Telsa did it.
       | 
       | This is actually a feature, not a bug.
       | 
       | Instead of having to spool up the jet engine which would burn a
       | lot of fuel and release a lot of CO2, the Tesla with its electric
       | motor, can do it with zero CO2 emissions.
        
       | Retric wrote:
       | I wonder all the different things that needed to fail for this to
       | happen.
       | 
       | Smart summon requires someone to hold the button down as they use
       | it. Did they not pay attention or did this fail to stop the car
       | after they let go etc.
       | 
       | Why didn't the car react to the aircraft? Did it not detect it,
       | or did it fail to judge it's location?
       | 
       | Did the car bit notice the collision, or is that ignored by this
       | feature?
        
         | adoxyz wrote:
         | The Hold the button down is one way of using Smart Summon and
         | it's not the default way. The default way has the car moving
         | forward until you hit stop or it detects something in the way.
        
           | cogman10 wrote:
           | "Hold the botton down" IS the default for both summon and
           | smart summon.
           | 
           | There is also (and has always been) a shit ton of warnings
           | you have to ignore to use the feature. [1]
           | 
           | Here's a particularly applicable warning from the manual.
           | 
           | > Smart Summon may not stop for all objects (especially very
           | low objects such as some curbs, or very high objects such as
           | a shelf) and may not react to all traffic. Smart Summon does
           | not recognize the direction of traffic, does not navigate
           | around empty parking spaces, and may not anticipate crossing
           | traffic.
           | 
           | I know a lot of people like to dig at tesla, but they really
           | aggressively warn drivers when it comes to using the driver
           | automation.
           | 
           | [1] https://www.tesla.com/ownersmanual/modely/is_is/GUID-6B9A
           | 1AE...
        
             | joshcryer wrote:
             | For sure. But warnings don't solve complacency. You summon
             | your Tesla to the front of Whole Foods successfully for
             | months, go to the airport and expect the same thing. They
             | think "oh these warnings are them just covering their
             | butt." Which the warnings are doing. It shouldn't be called
             | just "summon" it should be called "remote control summon."
             | Because everything about those warnings puts you in control
             | of the situation. But Tesla loves to use branding and will
             | take the hit for when that branding doesn't actually meet
             | its metrics.
        
           | judge2020 wrote:
           | I think that's just regular 'summon' where it'll only move
           | straight forward or back, which very well might be what's
           | happening in this video, but "smart summon" does require
           | holding a button down on the phone. The original reddit
           | comment[0] only said "someone tried to summon their Tesla".
           | 
           | 0: https://old.reddit.com/r/flying/comments/u95dqt/someone_ju
           | st...
        
         | lm28469 wrote:
         | > Why didn't the car react to the aircraft? Did it not detect
         | it, or did it fail to judge it's location?
         | 
         | Because these smart vehicles are dumb as fuck when you put them
         | anywhere other than on a well maintained, sunny, first world
         | country highway. Not so long ago teslas braked on the highway
         | when going under signs because they thought the shadow was an
         | obstacle. A few of them crashed in overturned trucks because
         | they though their roof was the sky/a cloud, one even missed a
         | damn firetruck and smacked into it at full speed
         | 
         | When you have thousands of cars out there your one in a billion
         | edge case will happen, this is the perfect example. A ten years
         | old would have braked, the tesla didn't
        
           | judge2020 wrote:
           | I think you overestimate a 10 year old driver - even a 15
           | year old on their learners might not realize that z height
           | matters, unless they're learning on a tall vehicle that can't
           | fit under some drive-thru overhangs.
        
             | [deleted]
        
             | RKearney wrote:
             | > even a 15 year old on their learners might not realize
             | that z height matters
             | 
             | There are a fair share of adults that do not understand
             | height while driving either. Look no further than the 12'4"
             | (previously 11'8") bridge on YouTube.
        
             | lm28469 wrote:
             | The plane didn't even clear the hood, safe to assume that
             | if an obstacle is at eye level you won't make it under.
        
         | johntb86 wrote:
         | > Why didn't the car react to the aircraft? Did it not detect
         | it, or did it fail to judge it's location?
         | 
         | According to
         | https://www.tesla.com/ownersmanual/modely/is_is/GUID-6B9A1AE...
         | 
         | > Smart Summon may not stop for all objects (especially very
         | low objects such as some curbs, or very high objects such as a
         | shelf) and may not react to all traffic.
         | 
         | The tail of the plane was quite high, so smart summon probably
         | wasn't trained to recognize it.
        
       | jdrc wrote:
       | the only thing that i want self-driving is my roomba
        
         | RcouF1uZ4gsC wrote:
         | Are you sure about that?
         | 
         | Pooptastrophe - https://www.usatoday.com/story/news/nation-
         | now/2016/08/15/po...
        
           | outworlder wrote:
           | Not OP but yes. Newer vacuums also have cameras to avoid this
           | exact issue.
        
             | moooo99 wrote:
             | Having an autonomous and internet connected vehicle driving
             | through my apartment makes me pretty uneasy.
        
         | Victerius wrote:
         | Until your Roomba crashes into the landing gear of your $3.5mm
         | private jet.
        
           | jdrc wrote:
           | it will turn around and find something else to crash on
        
           | dkjaudyeqooe wrote:
           | A common cause of hull loss in aircraft.
        
       | 2ctJoke wrote:
       | Send a few Teslas to Ukraine. The need air defence -- could work
       | this way :o)
        
       | verdverm wrote:
       | This is why you should use radar and/or lidar, not just
       | cameras...
        
         | sabujp wrote:
         | are you saying obstacle avoidance is impossible with multiple
         | cameras (yes probably not as robust)? Is it not possible to
         | tell the difference between an image artifact / shadows and
         | actual solid object?
        
           | dboreham wrote:
           | Much harder. Animals manage it, most of the time.
        
         | MBCook wrote:
         | The problem with radar is it can't see up high right? Just low
         | to the ground where the unit is?
         | 
         | Based on this video I'm not sure the radar would've had
         | anything to catch. It seems like the plane hit the top of the
         | car, not that the car hit the landing gear.
        
           | _moof wrote:
           | Radar can see wherever it's pointed. Point it up and it'll
           | see up.
        
           | darth_avocado wrote:
           | Without even knowing how their internals work, I can
           | guarantee that the bug in their software is that they don't
           | check for height clearance, because it's not needed in 99.99%
           | of the situations.
           | 
           | However, I do think radar should have caught it, because
           | radar has almost like a cone like view in front. If the car
           | was far enough, the cone would've spotted the height.
        
         | outworlder wrote:
         | How well is a front-facing radar going to see a Vision Jet,
         | considering it's higher up and mostly composites?
        
         | sbuttgereit wrote:
         | So if a human were driving the car, they would have crashed
         | into the plane? Humans don't have radar or lidar.... and
         | probably worse vision than the cameras on a Tesla have... but
         | probably wouldn't have hit the plane.
         | 
         | There may well be valid arguments for radar/lidar superiority
         | over cameras, but the line of reasoning you're suggesting isn't
         | in that category.
        
           | serf wrote:
           | humans are mobile, with moving necks/torso/eyes/etc.
           | 
           | I don't think anyone would argue that cameras couldn't do the
           | same job if capable of realizing depth and re-assessing from
           | different angles when confronted with ambiguity... but show
           | me what a system like that would look like.
           | 
           | A human that is parking somewhere ambiguously often gets out
           | of their car to inspect the area with their binocular vision
           | from multiple angles; this is common among trailer owners.
           | 
           | The vision system on a vehicle is tasked with a harder
           | problem in many ways -- it's trying to solve the ambiguity of
           | the scene purely visually with mostly-stationary cameras and
           | prior knowledge.
        
             | Dylan16807 wrote:
             | > moving necks/torso/eyes/etc
             | 
             | > realizing depth and re-assessing from different angles
             | 
             | A car with three or four widely spaced cameras can get way
             | better visual information than a human can. (At least in
             | the forward direction. Add more cameras for 360.) To the
             | point that you could probably give the human a VR set tied
             | into the cameras and have them do a _better_ job if you
             | make the pillars transparent. (Might need a special VR set
             | with extra-high field of view.)
        
         | servercobra wrote:
         | Smart Summon does use radar. Last I checked it's disabled on
         | vision-only Teslas. I wouldn't use until it uses the new FSD
         | stack, because even with radar it is not good.
        
           | opendomain wrote:
           | Tesla has radar but it is disabled? why is that?
        
             | atchoo wrote:
             | Removed from newer models due to part shortages / cost
             | reduction. The software function removed from models with
             | the hardware for consistency / to give the false impression
             | that it wasn't a useful sensor and that the cars are not
             | going backwards in capability.
        
         | boboche wrote:
         | I was thinking the same way a year ago and telling my fanboy
         | tesla friend how stupid it was removing lidars etc., but being
         | open minded and always looking to be challenged, I started
         | researching what they are doing and how they are doing it,
         | watch their AI day video (its old in AI terms but gives a good
         | insight), and I eventually got what they've meant when saying
         | lidar introduces noise compared to what they are doing right
         | now. TLDR is they convert photons into a multistereoscopic
         | camera and reconstructing the brain's behavior towards objects
         | and motion...the way they transform the image data into high
         | quality 3d point clouds is really mindblowing, people outside
         | of the 3d ecosystem cannot fully appreciate that, and its kind
         | of sad.
         | 
         | The camera performance is like the newer starlight sensors in
         | terms of seeing in the dark, and they seem to process from raw
         | data. Essentially, once they crack all the quirks, I am now a
         | firm beleiver that it will better than the average joe with
         | limited angulars vision+rotating head vs. surround stereoscopic
         | vision.
         | 
         | Not saying I 100% agree with launching a beta program in the
         | wild like this, but to their defense, given the current
         | government driving paperwork and legislation to insane levels
         | of unproductivity, innovators and challengers kinda have to
         | play it out like that if they want to disrupt sectors (in the
         | end) for the better.
         | 
         | Not saying the end justifies the means, but I can understand
         | the logic.
        
           | giantrobot wrote:
           | Humans don't just use vision when driving a car. Our eyes
           | also aren't fixed in our heads. They can gimbal independently
           | of our heads. Our torsos also give our heads more degrees of
           | freedom than just our necks. Human senses are actually fairly
           | good.
           | 
           | The main issue with vision-only FSD is that visual artifacts
           | don't convey high degrees of certainty about the solid nature
           | of things.
           | 
           | If the AI doesn't recognize an object as being an object it
           | can't add it to the list of things to worry about. If it's
           | augmented with LIDAR and radar it doesn't need to recognize
           | an airplane to know there's a solid object in its path.
           | 
           | It's dumb edge cases that cause problems. Vision-only FSD
           | leaves a lot of edge cases on the table with the hope that AI
           | magic will save the day.
        
           | PragmaticPulp wrote:
           | > TLDR is they convert photons into a multistereoscopic
           | camera and reconstructing the brain's behavior towards
           | objects and motion...
           | 
           | I think maybe someone dazzled you with some excessive jargon.
           | Extracting point clouds from stereoscopic cameras isn't a
           | Tesla invention, even though they've invested a lot into
           | trying to make theirs work. This is some computer vision 101
           | stuff, but nobody calls it "converting photons".
           | 
           | > Essentially, once they crack all the quirks, I am now a
           | firm beleiver
           | 
           | Well obviously if they solve all of the problems then we'd
           | all be believers too.
        
           | yababa_y wrote:
           | > TLDR is they convert photons into a multistereoscopic
           | camera and reconstructing the brain's behavior towards
           | objects and motion...
           | 
           | I just spent the time watching the vision segment of that
           | video, and while the presenter uses the brain as a simile to
           | motivate neural network architecture, it actually is not
           | modeled at all on how primate visual cortex works. Seems some
           | tweeps also got caught up in this hype. I think those few
           | slides were really just to show the complexity of the
           | problem.
           | 
           | For parties interested in actual models of biological vision,
           | https://serre-lab.clps.brown.edu/wp-
           | content/uploads/2014/10/... is a good resource.
        
       | lkxijlewlf wrote:
       | That's gonna leave a mark...
        
       | tailspin2019 wrote:
       | Further discussion here:
       | 
       | https://news.ycombinator.com/item?id=31123074
        
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