[HN Gopher] Tarpit ideas: What they are and how to avoid them (2...
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       Tarpit ideas: What they are and how to avoid them (2023) [video]
        
       Author : dgs_sgd
       Score  : 129 points
       Date   : 2025-04-23 16:59 UTC (2 days ago)
        
 (HTM) web link (www.ycombinator.com)
 (TXT) w3m dump (www.ycombinator.com)
        
       | kristopolous wrote:
       | When context changes, so do the prospects of these ideas.
       | 
       | Youtube wasn't the first video streaming service but it was one
       | of the first for the DSL era when people could watch video
       | without lengthy waits.
       | 
       | AI companies repeatedly failed until enough things, specifically
       | data and compute were at enough scale to deliver.
       | 
       | Advancements in battery technology made electric cars practical
       | bucking the trend of decades of failed EV car companies.
       | 
       | So many things - contactless payment, touchscreens, even LCD
       | panels, these were lousy and impractical for decades.
       | 
       | Attempts at mass adoption of handheld computers, now called
       | smartphones, started in the 1980s. Without high speed mobile
       | networks, high density color LCD screens, reliable geolocation,
       | these things were necessary to make the handheld pocket computer
       | something that everybody has.
       | 
       | Even online grocery delivery services, now common place, had its
       | start in the catastrophic collapse of WebVan in the 1990s. Cell
       | phones, the gig economy, mature e-payments, these were all
       | needed.
       | 
       | You always need to look for the context change and how that can
       | untar some tarpits.
        
         | dgs_sgd wrote:
         | The video has a good heuristic to apply that I think works even
         | within changing contexts: "avoid things with a high supply of
         | founders who want to work on it but zero consumer demand for
         | the thing itself", the classic one being a
         | discovery/recommendations app.
        
           | kristopolous wrote:
           | I guess. Successful executions become so endemic you have to
           | take a step back and recognize it.
           | 
           | Hn is a discovery/recommendation site as is Reddit. Amazon
           | makes a lot of margin on theirs and arguable it's part of the
           | major value add for Spotify and Netflix.
           | 
           | Almost everybody looks at food and accommodation reviews and
           | people bring up IMDb and rotten tomatoes when considering
           | whether to watch a movie.
           | 
           | Search engines and llms make decisions on what to surface,
           | those are a kind of recommendation as well.
           | 
           | So although I understand the sentiment, it's not really a
           | great example - there's plenty of successful executions
           | beyond the dreaded "for you recommendations" engagement bait
           | slop on social media feeds. You're using the successful
           | executions dozens of times a day without noticing it.
        
             | fakedang wrote:
             | > Hn is a discovery/recommendation site as is Reddit.
             | Amazon makes a lot of margin on theirs and arguable it's
             | part of the major value add for Spotify and Netflix.
             | 
             | Nope, HN is just an online forum. I can't tailor what I see
             | on HN to my tastes, and there's a subset of posters who get
             | preferential treatment on the frontpage (YC companies), so
             | nope, HN is not a recommendation site.
        
           | anself wrote:
           | I don't think there's zero demand recommendation apps, a lot
           | of founders choose this because it's a problem they want to
           | solve for themselves, and there are a few success stories out
           | there. It's just that it's a super-hard problem
        
             | bee_rider wrote:
             | What's a recommendation app? Like, I'd like to watch this
             | movie, can you tell me if it is streaming on anything?
        
               | fc417fc802 wrote:
               | Do you think we've made it to the point that a broker for
               | streaming services would be viable? You pay a 10% premium
               | and they connect you with the media you want to watch
               | without you needing to maintain a monthly subscription to
               | 15 different services.
               | 
               | Would probably be worth it even if just to have a
               | consistent UI across services.
        
               | bee_rider wrote:
               | That would be nice, but I think it is just a licensing
               | issue and the companies that hold the licenses don't have
               | any incentive to try and simplify things--they'd prefer
               | we subscribe to every service and then watch, like, one
               | show on each.
        
               | bjelkeman-again wrote:
               | It would be interesting to see data on this. How many
               | people subscribe to multiple streaming services, vs the
               | opportunity to license the content to an aggregator and
               | sell to those that miss a lot of content because, like me
               | they don't want multiple services. I refuse to subscribe
               | to all the services that have the content I want to
               | watch: Netflix, Apple, Prime, HBO Max, Discovery... the
               | high seas become an inconvenient option at this point.
        
               | bee_rider wrote:
               | I agree (and would also like to see that sort of info if
               | it existed). But, I'm pretty sure the same folks who were
               | in charge of cable when it became insufferable are now in
               | charge of streaming. So, less-annoying business models...
               | I'm not hopeful.
        
               | andreasmetsala wrote:
               | > vs the opportunity to license the content to an
               | aggregator
               | 
               | Isn't this what Netflix used to be
        
               | sgerenser wrote:
               | Exactly. And the whole reason all these other services
               | popped up is the IP holders realized they could make a
               | lot more money with their own service vs licensing to an
               | aggregator. I think it worked out pretty well for
               | Disney+, because they have a huge back catalog of very
               | popular IP. Not sure if anyone else is really making
               | money with this new model, but they still don't want to
               | go back to ceding all control to Netflix.
        
               | nottorp wrote:
               | We could go back to the olden days when everything was on
               | Netflix instead :)
        
               | wavemode wrote:
               | Amazon Prime Video is already this. You can subscribe to
               | Max, Peacock, Crunchyroll, etc. from within the Prime
               | Video app, and watch content normally exclusive to those
               | services.
        
             | stevage wrote:
             | Yeah, what was Zomato if not this?
        
             | saulpw wrote:
             | "It's a problem they want to solve for themselves", but
             | note that they haven't tried all the alternative
             | recommendation services and are only creating one as a last
             | resort. They _want to solve the problem_ , which is a
             | different drive from wanting a recommendation app.
             | 
             | Now, if someone made a "Recommendation-Engine-in-a-Box",
             | where someone who wanted to make a recommendation app for
             | themselves would supply the content and could tweak the
             | algorithm and the design, I could see that being successful
             | in this market :)
        
               | fc417fc802 wrote:
               | > I could see that being successful in this market
               | 
               | I guess SaaS aimed primarily at founders makes it a meta
               | startup? The snake is eating its tail.
        
             | petesergeant wrote:
             | > It's just that it's a super-hard problem
             | 
             | I spent 2024 building an awesome TV series recommendation
             | platform. It worked by matching you to professional critics
             | who shared your tastes, by basically crawling Rotten
             | Tomatoes and getting an LLM to grade the reviews out of
             | ten. The recommendations were awesome, and having a
             | personalized Rotten Tomatoes where you could read about and
             | research the show using reviews by people who felt the same
             | way as you did about stuff was freakin' cool.
             | 
             | However, getting people to actually sign up and use the app
             | without a massive marketing budget was very, very
             | difficult. The stickiness to get people to go back to it is
             | difficult. Asking people to input their preferences in the
             | first place is hard. People also simply didn't believe the
             | recommendations, and wouldn't take chances on shows; the
             | computer can recommend The Detectorists to as many people
             | as it wants, but there's a high number of people who would
             | love the show but will dismiss it looking at the cover
             | image and having a quick read of the synopsis.
             | 
             | The recommendation part isn't super hard, the getting
             | people to use a B2C app is super hard.
        
               | immibis wrote:
               | Now, if you were Netflix (or Popcorn Time), you could
               | just show them the series directly in the app and people
               | would come to your app to watch the series, and also get
               | the recommendations. They'd come back more often if you
               | had good recommendations. People just don't want
               | standalone recommendations.
        
               | flir wrote:
               | There's also the fact that more data == better
               | recommedations.
               | 
               | Even if people wanted your standalone app, they're not
               | going to sit and enter the kind of rich data a decent
               | recommendation engine needs. It really has to be a tool
               | that gathers data about you as a side-effect of you using
               | it.
        
               | immibis wrote:
               | Well, there's "enter your Netflix username and password
               | here"
               | 
               | This has _severely_ fallen out of fashion since the
               | 2000s, but it used to be not uncommon that when one web
               | app wanted to do actions on your behalf on another web
               | app, it would just take your username and password and
               | log in as you. According to Cory Doctorow (I wasn 't
               | there) Facebook did this to MySpace.
               | 
               | For Netflix in particular, logging in from your server
               | would probably trigger anti-account-sharing, but you
               | could avoid that by making the requests you need from the
               | user's app on their device, not from your server.
               | 
               | I think the industry _feels_ like it 's illegal now, but
               | I don't think it's _actually_ illegal? since there 's no
               | criminal intent. I don't think it's the same, legally, as
               | when a criminal steals your login details and logs in as
               | you. But I'm not a lawyer and this is not legal advice.
               | But my evidence is that there are apps (e.g. POLi) that
               | do this with _bank accounts_ and still don 't seem to be
               | in any trouble. Even the banks don't seem to be locking
               | it out as that would hurt the customer's relationship
               | with the bank.
        
               | quibono wrote:
               | Interesting. I wonder if this is the right way though.
               | Firstly because the RT critic score was gamified a while
               | ago, and secondly because there's often a big gap between
               | what the critics think and what the audience thinks. (One
               | of the things I like to do is find movies on RT where the
               | difference between the two is the biggest) Even if you
               | ignore the fact that some reviews will be sponsored and
               | not made entirely in good faith this is assuming that
               | critics' judgment is a good signal in the first place.
        
               | petesergeant wrote:
               | I think all of this is addressed by matching you to
               | critics who like and dislike the same shows as you like.
        
               | actionfromafar wrote:
               | Still doesn't solve the problem of finding content I
               | don't like, but it's so good, that I start liking it.
               | This doesn't seem to happen much anymore.
        
               | plastic3169 wrote:
               | I think sign up for anything is a tall order. To use a
               | recommendation site I would need it to just start asking
               | me questions and immediatly also start the process of
               | visually narrowing down content suitable for me. How many
               | ratings from me would you need to do a good rec? Is there
               | diminishing returns after certain amount of data from the
               | user? There should be zero barriers of entry to this kind
               | of thing. Like quirky website you click for few minutes.
               | You can always provide "save your answers" button and
               | have the sign-in flow there, although I would appreciate
               | unique link I can bookmark more.
        
               | imtringued wrote:
               | And this is how we ended up with tinder...
        
           | nradov wrote:
           | That seems like terrible advice. First, many founders are
           | targeting business or government customers rather than
           | consumers. Second, when it comes to disruptive innovations,
           | consumers don't even know what they want until you show it to
           | them.
        
             | ozim wrote:
             | Even worse if you show it to them they still might not know
             | they want it.
             | 
             | You need like critical mass of early adopters so that
             | people would see ,,hey this is useful, maybe I can use it
             | too".
        
           | ijustlovemath wrote:
           | is there a difference between this and product market fit?
        
           | nine_k wrote:
           | Discovery and recommendation apps for music and videos, such
           | as Spotify, YouTube, and TikTok, are big hits.
           | 
           | You just have to have a colossal inventory, and a reasonably
           | good algorithm.
        
             | bryanrasmussen wrote:
             | Discovery and Recommendation in those apps seem to be
             | features, not the purpose of the app itself.
        
               | taurath wrote:
               | The purpose of the app is to sell ads via engagement,
               | recommendation is at least a partial (majority?) driver
               | of engagement, so it's part and parcel of the purpose of
               | the app.
               | 
               | People want what they're providing, companies want to
               | sell ads, and increase people's tolerance of ads. Until
               | the next platform without ads comes out (note - tiktok
               | didn't have ads almost at all for the first year)
        
             | immibis wrote:
             | The main purpose of these apps is to click on them and
             | watch/listen to some $foo. Not to just tell you what to
             | watch/listen to.
        
             | pjc50 wrote:
             | You can't have a discovery app _that doesn't host the
             | content_.
        
               | quinnirill wrote:
               | Google and/or IMDb don't count as discovery apps or not
               | hosting the content?
        
               | doubled112 wrote:
               | Last.fm did it, or did they host content and I've never
               | realized this in 20 years?
        
               | bondarchuk wrote:
               | Yeah last.fm was a streaming webradio type thing. You
               | could also scrobble your own mp3s but (as I remember it)
               | the whole point of that was so you could then listen to
               | the stream tailored to your preferences.
               | 
               | Just like Pandora which was also really great for a
               | while.
        
               | diggan wrote:
               | > You could also scrobble your own mp3s but (as I
               | remember it) the whole point of that was so you could
               | then listen to the stream tailored
               | 
               | That's not how I remember it at all. The biggest features
               | (that at least made me and my friends use it) was that no
               | matter what player you used, it probably had a "Scrobble
               | to last.fm" features (which sadly, seems Spotify at least
               | removed), and then you'd use Last.fm to find new songs to
               | play via your own player.
               | 
               | I don't think I remember anyone using the Last.fm
               | radios/playlists, but instead just as a data-browser to
               | find new artists/albums/songs, then play those somewhere
               | else.
               | 
               | But this was around 2005 sometime in Sweden, we basically
               | just had Spotify and maybe Grooveshark available for
               | streaming, maybe things typically worked differently
               | elsewhere.
        
           | dcow wrote:
           | Recommendation apps would work a lot better if we weren't so
           | collectively hing up on copyright.
        
           | f3b5 wrote:
           | In central Europe our biggest tarpit are sustainability /
           | climate topics. Even founders that are smart enough to
           | realize the difficulties still pursue these topics because of
           | an unfoly feedback loop where government agencies almost
           | exclusively fund those "societally important" areas. There's
           | no other risk capital available so most founders align their
           | goals, just to fold 1-2 years later.
        
             | vanattab wrote:
             | I mean that's better then funding a bunch of startups that
             | try and use psychological traps to capture the attention of
             | your kids and ruining their ability to focus. Most of them
             | also fold 1-2 years later.
        
           | Enginerrrd wrote:
           | Yeah this is actually a really useful idea in general.
           | 
           | I learned this when I was put on a team for a modeling
           | competition in college. You had like 72 hours to solve the
           | problem and write the report. It was really stressful but a
           | LOT of fun.
           | 
           | There were a range of topics that you could choose from. Some
           | were really obvious how to apply mathematics to, and some...
           | weren't.
           | 
           | I was the math talent on the team... but my team members
           | talked me out of going for one of the problems that were easy
           | to apply math to. We instead picked the problem where it was
           | LEAST obvious. And... we ended up winning the competition
           | against a field of 10,000+.
           | 
           | I think that lesson applies in business all over the place.
           | There's actually a lot of good comfortable money to be made
           | in unglamorous industries.
        
         | mritchie712 wrote:
         | I think many of the "fun" ones will always be tarpit ideas.
         | e.g. "an app to help find something fun to do with friends"...
         | that's just your chat app of choice.
        
           | worldsayshi wrote:
           | Instagram has recently been quite successful at giving me ads
           | for events that seem actually fun and relevant to me, to the
           | point of me being low key afraid of throwing off the
           | algorithm so it starts recommend worse things. So, I think
           | there's potential but it's very elusive. I feel that my
           | Instagram "getting it" is more of an accident than by design.
        
         | api wrote:
         | Maybe the moral is: before starting a venture like others in
         | the past that failed, work out from first principles as much as
         | you can whether the enabling technologies or other
         | circumstances in the world have reached some kind of tipping
         | point that makes it different this time.
         | 
         | It probably won't be different this time unless something has
         | changed. "I'm just that good, I will out execute everyone
         | before me" is probably BS. The people before you were probably
         | not lazy or dumb, it just wasn't time.
        
           | IAmBroom wrote:
           | You mean due-diligence in market research?
           | 
           | Bah! That'll never work!
        
         | cjohnson318 wrote:
         | I think of "context change" as multiple technologies and trends
         | that chaotically converge into a critical mass of opportunity.
         | It's easy to spot looking backwards, but impossible to predict.
         | You're just the nth individual trying this new/old thing, and
         | now the market supports it, and for a while things are great,
         | until you overreach, you don't reach enough, you're legislated,
         | a new technology comes out of nowhere, there's a pandemic,
         | there's a tectonic shift in global markets, etc.
        
         | fnord77 wrote:
         | do you know of any technologies that are lousy now and might
         | untar sometime later?
        
           | kens wrote:
           | Some thoughts: VR, fusion, non-refrigerant cooling
           | technologies, personal genomics, silicon-on-sapphire ICs,
           | every drug and treatment that is just around the corner,
           | quantum computing, CO2 capture, failed Google projects such
           | as Google Glass, Google Wave, Google contact lens glucose
           | sensor.
        
             | fnord77 wrote:
             | optical computing, custom printed medication(s) pills
        
               | marcosdumay wrote:
               | I think optical computing is in the exact opposite of the
               | situation the OP describes.
               | 
               | We have known how to do it for a while now. There are
               | just not too many applications where its strengths are
               | more important than its drawbacks.
        
             | HPsquared wrote:
             | Nuclear energy (new OR existing technologies)
        
             | worldsayshi wrote:
             | Social media that aligns with human needs, permaculture
             | farming, digital voting systems, smart contracts.
        
           | ImHereToVote wrote:
           | Choose your own adventure games.
        
         | HPsquared wrote:
         | Similarly a lot of people give up on something in their life,
         | e.g. finding a partner, because of earlier attempts in
         | different (worse) conditions.
        
           | pixl97 wrote:
           | Quite often we are incapable of identifying what those
           | different conditions were. When something you don't think is
           | important is the actual cause of the failure you're unlikely
           | to notice and misatrubute the cause.
        
         | j45 wrote:
         | Learning the timing of timing is one key skill to learn.
        
         | nickdothutton wrote:
         | On the subject of context I wrote a short post back in 2018
         | [0].
         | 
         | Smart people spend time on this problem/solution.
         | 
         | Solutions appear but fall short of expectations.
         | 
         | The technology or more commonly that application of it is
         | stigmatised.
         | 
         | Sometimes the whole field becomes tainted.
         | 
         | The problem/solution complex is declared a "dead end" or "false
         | dawn".
         | 
         | Interest cools. Nobody invests for a while. The wreckage of the
         | previous cycle rusts away. The craters erode. This takes 20-30
         | years.
         | 
         | During this period, some very small companies, academics, and
         | individuals continue to guard the flame, but lack funding or
         | new talent to advance.
         | 
         | Go to step 1, invent new buzzwords/framing and repeat.
         | 
         | Ignore much of what was learned during the previous cycle.
         | 
         | [1] https://blog.eutopian.io/the-next-big-thing-go-back-to-
         | the-f...
        
           | zik wrote:
           | I remember the excitement around VR back in the late 80s.
           | These new polhemous motion tracking devices and LED
           | microdisplays were going to change the world! Except the
           | technology was expensive and ultimately it kinda sucked. It
           | was barely used outside academia, interest died off gradually
           | and eventually it was tacitly acknowledged to be going
           | nowhere.
           | 
           | Then 30 years on Oculus was founded and everyone who'd never
           | used one of the old VR systems was super excited. To be fair,
           | the technology was a step better - much cheaper and more
           | accessible, low motion input latencies, better resolutions.
           | But ultimately it's still not really quite good enough and it
           | seems that the hard reality is it's not going to make its way
           | into mainstream consumer everyday use this time either.
           | 
           | I can't wait for round 3 in 2040 or so.
        
             | diggan wrote:
             | > But ultimately it's still not really quite good enough
             | 
             | I'm not sure what use cases you've tried it, but I'm
             | "playing" a bunch of flight simulators, and after getting
             | used using a HP Reverb 2 for all my simming, it's basically
             | impossible to move back to "flat" screens again. It gives
             | you a completely different depth-perception that is as
             | vital when you fly as when you race, so basically any
             | simming is a lot easier and more fun with VR. But again, if
             | you make the plunge into VR simming, it's short of
             | impossible to go back to "normal" afterwards.
             | 
             | > hard reality is it's not going to make its way into
             | mainstream consumer everyday use this time either.
             | 
             | Yeah, simultaneously I agree with this. VR-in-motion (so
             | not sitting still) is still pretty bad, and the setups you
             | need for good performance are pretty expensive, so it's
             | unlikely to break into mainstream unless some breakthrough
             | is being made. With that said, there are niches that are
             | very well served by VR and personally I guess I hope it'll
             | be enough when the mainstream hype dies off.
        
               | dingnuts wrote:
               | I disagree, I played a lot of Elite: Dangerous with a VR
               | headset and while I completely agree about the scale, it
               | was so much hassle to get in and out of the goggles and
               | get everything set up and then to be totally cut off from
               | the real world for any extended period that I stopped
               | using it.
               | 
               | It's been in the closet for a few years. Beat Saber is
               | fun too, but.. I guess if you're the kind of person who
               | has a sim setup in a dedicated room in your house it's
               | still appealing but for anyone remotely casual it's just
               | not worth it
        
               | jerf wrote:
               | VR has moved from "only enthusiasts can even consider it"
               | to "viable niche". That's a huge step up... viewed
               | logarithmically you could even call it "halfway there".
               | But it definitely needs a couple more revs before it gets
               | to "mainstream accessible".
        
             | grogenaut wrote:
             | Maybe the change is the internet amplifies those holding
             | the flame longer, like those responding parallel to me
        
             | psunavy03 wrote:
             | AR is the true future, but we're a materials science
             | breakthrough away. You need waveguides or some similar
             | thing that generates holograms that's cheap, has a wide
             | FOV, and works in bright light. HoloLens and Magic Leap
             | came close, but people couldn't figure out how to make
             | enough money off the devices, apparently.
        
               | echelon wrote:
               | Is it?
               | 
               | I don't want to see sports teams playing on my coffee
               | table. I don't want to see recipes dancing in front of me
               | while I wear glasses in front of a stove, the humidity of
               | boiling water vapor sticking to plastic lenses. I don't
               | want people dicking around with headwear while they're
               | supposed to be driving. I don't want to see contact and
               | bio information hovering above my friends. And I
               | certainly don't want to see ad overlays throughout daily
               | life.
               | 
               | I want to escape life and enter fantasy worlds. I want to
               | be transported. I want to see the Matrix unfold in front
               | of me. That's about as far from AR or XR as I can
               | imagine.
        
             | yaky wrote:
             | IIRC there was a brief VR spike around early 2000s. I
             | remember trying out Duke Nukem in a helmet and a three-
             | button controller.
             | 
             | And then a bit later, there were 3D glasses, ones that
             | synchronized with the high-rate monitor to show each eye
             | its respective right and left frame. The demo for it at the
             | time was Rogue Squadron and I thought the effect was
             | amazing.
        
         | michaelcampbell wrote:
         | > DSL era
         | 
         | What's this mean?
        
           | cplan wrote:
           | Digital Subscriber Line
        
           | cmrdporcupine wrote:
           | It means I now get to feel really old for the rest of the
           | day.
        
             | 0xdeadbeefbabe wrote:
             | If you imagine a modem handshake sound I wonder what baud
             | rate it is.
        
           | diggan wrote:
           | Before we had cables dedicated to internet, we reused
           | telephone cables for both telephone+internet, so adding
           | digital data on top of the existing network, hence Digital
           | Subscriber Line :) It was the fiber of the 90s.
        
             | cmrdporcupine wrote:
             | Surely a large # of North American internet users are still
             | using DSL?
             | 
             | I mean, I live rural and even I have fiber now, but that's
             | new.
        
               | diggan wrote:
               | The island I grew up on in Sweden (with a population of
               | ~700) got broadband in 2007 sometime I think, and in 2013
               | got fiber optics. Surely most of North America has to be
               | using better stuff than DSL at this point? Although
               | geographically and politically it is probably a bit
               | harder to get high performance internet access everywhere
               | there.
        
         | maccard wrote:
         | I think the summary of the video captures this essence really
         | nicely.
         | 
         | > If your idea has been tried before, do your research and
         | understand why it didn't work. Assume the founders who tried
         | before were very smart, very determined people; what's
         | different now?
         | 
         | If you can't answer that question, don't try again.
        
         | fidotron wrote:
         | What pushed YouTube over the edge was it had backers that were
         | willing to overlook and fight for the rampant copyright
         | violations that it had at the time. Then once big enough it
         | then did the deals to go legit, which it now enthusiastically
         | supports for any new entrants.
         | 
         | No other streaming site would have got away with that. Napster
         | was also a bit of a demonstration of how it probably wouldn't
         | work, so it wasn't a low risk strategy.
        
         | morsecodist wrote:
         | From the video it doesn't really seem like tar pit ideas are
         | about technical limitations but more about solving the wrong
         | problem. I don't think the ideas you list are tar pit ideas at
         | all. The value proposition for all of these things is obvious.
         | The technology was hard but once the technology existed it was
         | pretty clear that people would want these things.
         | 
         | At least from my read of the definition tar pit ideas are not
         | just ideas that have been tried and failed but they are
         | supposed to seem easy. Things like the restaurant discovery
         | example are technically very easy to build but the limiting
         | factor to people enjoying buying from restaurants is not a tech
         | platform.
        
       | Scene_Cast2 wrote:
       | Some ideas are tarpit ideas until enough people get stuck.
       | 
       | Location estimation (figuring out where you are) based on indoor
       | WiFi / BLE is one example. Compared to 15 years ago, we have
       | (IIRC - I don't work in this space) super-precise timing API from
       | the modem, and there has been work on the reflections issue (the
       | two big problematic things that non-RF people typically miss).
        
         | little_ent wrote:
         | I did a project on this in like 2010 as a student hobby
         | project. It wasn't accurate, but I also had no idea what I was
         | doing. I mostly did it in a naive way, where I mapped out
         | signal strengths in various rooms (it was dorm floor, 2 rooms
         | shared each) and then trying to figure out where I was based on
         | it. As a non-CS student I thought it was cool......
        
           | dfedbeef wrote:
           | It was cool
        
         | genewitch wrote:
         | What about multipath? Is that not an issue at wifi wavelengths?
         | Or is that a sub or superset of reflections? It was quite a
         | long time ago now that the first "proof" that one could use
         | leaky WiFi to "see through walls" and observe people moving
         | around inside a building from without.
         | 
         | Participate in a transmitter hunt (also called a foxhunt or a
         | t-hunt) where the organizers or the people hiding the
         | transmitter know their stuff. Reflections and multipath can
         | lead you _miles_ away from a transmitter location.
         | 
         | Anyhow, someone asked me if I knew how to do this without
         | consent once; that is, if I knew how to track people in a
         | building without them knowing. This was 8 years ago or so. I
         | had hoped saying "that's not possible" would dissuade them, but
         | instead they just never spoke to me again.
        
           | Scene_Cast2 wrote:
           | Oh yeah, multipath is the term I was thinking of. As I
           | recall, the issues were that a "longer" path may have a
           | stronger signal than a more "direct" path, and that a
           | straight line of sight path is not a given.
        
         | AdventureMouse wrote:
         | I think there is a difference between ideas that are based on a
         | fundamental misunderstanding of how the world works and ideas
         | that we do not currently have the capabilities to solve.
        
       | dgs_sgd wrote:
       | The video has a sequel released nine months ago:
       | https://www.youtube.com/watch?v=GU9iT7MW0rs
        
         | samschooler wrote:
         | And for completeness, here is a video from 2022:
         | https://youtube.com/watch?v=Th8JoIan4dg&t=195s
        
       | surprisetalk wrote:
       | https://taylor.town/tarpits
        
       | anself wrote:
       | Is there a way to consume this in text instead? Video is far too
       | slow and cumbersome and requires headphones
        
         | tomhow wrote:
         | You can browse through to the video on YouTube then read the
         | transcript (I think transcripts are available on all YouTube
         | videos - perhaps unless the publisher disables it. But it's
         | definitely available on this one).
         | 
         | I think it would be great if YC turned discussions like this
         | into well edited written articles. I know there's talk about
         | producing more text content to help startups.
        
         | djmips wrote:
         | Google Gemini will also summarize if you want to start there.
         | The transcripts are tough to read IMO
        
       | mwilcox wrote:
       | Maybe YC is the problem
        
       | bjornsing wrote:
       | Why do I feel like YC videos are targeted at really slow people?
       | The combination of discussion in slowmotion and exaggerated
       | gestures reminds me of elementary school. I'm sure there are
       | valuable ideas in there, but I just don't have the patience to
       | watch.
        
         | 65 wrote:
         | Sorry Mr. Smarty Pants that Hacker News is not Smart enough for
         | you.
        
           | bjornsing wrote:
           | Hehe. But I must say HN in general is significantly higher
           | pace than these YC videos, intellectually.
        
         | eirikbakke wrote:
         | Just watch at 150% speed.
        
         | joshdavham wrote:
         | YC (and Dalton & Michael in particular) like to emphasize
         | clarity and "the basics" in their videos. Recall that their
         | target audience are largely nerds in their early-mid twenties
         | who've never started a business before.
        
         | marcosdumay wrote:
         | They are probably following some kind of training.
         | 
         | Those features are very common on every educational video. I do
         | agree that this one focus on an audience that is supposed to be
         | too advanced in relation to the video depth of knowledge, so it
         | shouldn't need it. But still it is normally pushed for every
         | video, and the risks of getting the pacing wrong are very
         | asymmetric.
        
       | gitroom wrote:
       | dang that was packed with real talk - ive tripped over my share
       | of looks obvious, actually impossible ideas too. you ever get
       | tempted to try the same failing thing hoping this time the
       | timings right?
        
       | asimpleusecase wrote:
       | The tarpit idea is very descriptive in hindsight. What makes
       | something a tarpit is an idea that sounds cool on the surface and
       | is accessible (don't have to be one of a kind founder to do it)
       | and when you talk to your friends and people who might be
       | customers you get very positive feedback. So it all starts to
       | feel like a slam dunk. However, if you are a VC you will have
       | seen this exact idea or close variations in it a hundred times
       | and they all flamed out to a zero. As the VC you have visibility
       | into common failure modes ( not able to charge enough, no scaled
       | market, not sticky enough, etc) what is hard from the founder
       | side of things is all those issues and many more are common to
       | almost any venture until you crack the problem and get market
       | fit. So the tarpit concept is more a description of VC scare
       | tissue than a fully operational definition for founders ,because
       | a former tarpit can become a blue ocean of opportunity (
       | uncontested market) if some element of the equation changes (
       | technology shift, culture shift, deep founder insight etc)
       | 
       | So as a founder how can you tell if you are about to jump into a
       | tarpit?
       | 
       | 1) do a lot of research on the problem and see what has been done
       | in the space in the past and who is working on the problem now.
       | If you find lots of failure - dig in and try to understand what
       | the core failure modes were. 2) work on something that people
       | will pay you for, even a very ugly early product. Income is a
       | strong validation. 3) reconsider your idea if it requires the
       | incineration of mountains of cash to get people's attention.
       | 
       | But at the end of the day Tarpit is really a descriptive
       | heuristic that VCs can find to be useful but not absolute.
        
         | scyzoryk_xyz wrote:
         | I found imagining the actual metaphor of tarpit enlightening -
         | it looks like a nice healthy pool of water but turns out to be
         | sticky and impossible to get out of. Under that attractive
         | surface are all the corpses of everyone else who charged in and
         | got stuck.
         | 
         | So it's exactly like you say: you keep your distance and you
         | look for evidence.
         | 
         | I do think the point of the metaphor is that sometimes a tarpit
         | is just what it is. I.e. there is no value under that shiny
         | surface and you're only getting stuck staring at it.
        
       | joshdavham wrote:
       | What are some tarpit ideas that y'all've come across? Any AI-
       | specific tarpit ideas?
        
         | janalsncm wrote:
         | If by "AI" you mean freemium platforms making api calls to
         | OpenAI with a markup, I would say most of them. If it's easy,
         | 100 people are already doing it.
        
         | wavemode wrote:
         | Any idea where you are basically just a wrapper over some other
         | other company's API.
        
         | queueueue wrote:
         | Not sure about AI specific but: Todo apps, habit trackers, lots
         | of social media, job boards, recommendation apps, fun things to
         | do with friends, travel planners, trackers (movies/books). I
         | think it's more common for B2C because these are things that a
         | lot of people come across.
         | 
         | Some of these ideas could maybe be done better now that we have
         | genAI but the question might would it work as a standalone app
         | or is it just a feature?
        
         | tlb wrote:
         | It's far too soon to call any AI-specific ideas tarpits.
         | Nothing newly made possible by LLMs or generative image models
         | has been tried long enough to give up on. There are no startup
         | bones to dig up yet.
        
         | thruway516 wrote:
         | Not AI but Ive seen a lot of social startup apps in my time all
         | trying to be the next facebook with a twist. They all end up in
         | the same place. If you have any idea along the lines of
         | "Do/share X with your friends" it has probably been tried a
         | million times before so just don't. Another one is dating apps.
         | Everyone thinks they all suck and everyone thinks they have the
         | new twist that will make it not suck. End result is so many
         | shitty 'ghost town' dating apps that end up looking and
         | functioning like the other 99%. Once in a while a Snapchat or
         | Tindr will break out with a genuinely fresh idea but for every
         | one of those there are a million carcasses of failed startup
         | ideas
        
           | whstl wrote:
           | I worked in a consultancy/agency 15 years ago for less than a
           | year (it wasn't for me) and in that short span I witnessed 3
           | "facebook with a twist" projects. Code was delivered, but
           | they naturally failed to gain any critical mass whatsoever.
           | Also having startups getting a consultancy to do their code
           | was already quite strange.
           | 
           | I specifically remember one of them being "facebook for dogs"
           | and another being for restaurant professionals.
        
       | badmonster wrote:
       | this is a great video
        
       | aaron695 wrote:
       | I think it's a good video.
       | 
       | "The restaurant doesn't exist" is an important axiom.
       | 
       | It's why recommendation engines are useless, Netflix has nothing
       | more. Smart users will see TikTok doesn't really have a good
       | recommendation engine, just good content, bite sized so lots can
       | be produced.
       | 
       | > the world seems limitless but for these physical things it's
       | actually fairly limited
       | 
       | This is a really good quote, it also applies to digital.
       | 
       | Anyway, a list of tarpit ideas would be useful. The axiom's are
       | too hard, like software complexity and getting money out of
       | educational institutions.
        
         | thruway516 wrote:
         | > Smart users will see TikTok doesn't really have a good
         | recommendation engine, just good content, bite sized so lots
         | can be produced.
         | 
         | This. Nobody has invented a Recommendation engines that really
         | works, the ones that seem to work just have lots of content
         | they can throw at you. I really think tiktok would be no less
         | succesful with an engine that simply threw a random video at
         | you. Recommendations is a really hard problem and anyone that
         | solves it had essentially solved AGI
        
       | cjs_ac wrote:
       | I used to be a schoolteacher, so whenever I read about someone's
       | shiny new EdTech idea, I can't help but think that it's a tarpit
       | idea.
       | 
       | Every developed country has a set of professional standards for
       | teachers, and teachers who don't live up to those standards are
       | pushed out, sometimes by having their teaching accreditation
       | revoked. In Australia, for instance, there's a set number of
       | hours of 'professional development' that teachers have to do
       | every few years, and if you don't complete them, you lose
       | accreditation and have to find a new career. The professional
       | development activities and courses that meet the requirements are
       | audited by the Department of Education, and have to draw on the
       | latest research in educational psychology: keeping up with the
       | latest research is the entire point of that professional
       | standard.
       | 
       | When I did my teacher training, the first thing we were told in
       | the first lecture was to never cite any research older than ten
       | years, because it would be out of date. Now, if you've trained in
       | the sciences - I was a physicist - you should be troubled with
       | this, because a discipline can't really accumulate knowledge
       | about the world if it throws everything out after ten years.
       | That's why, when I broke the rules and searched through the
       | databases of academic literature going back more than ten years,
       | I saw the same ideas being reinvented under different names in
       | different decades.
       | 
       | So there seems to be a bit of a trend for people to build
       | flashcard-type tools at the moment, probably because someone's
       | seen a paper on spaced repetition. That's nice, but you can't
       | build a business around this. It doesn't matter if all the
       | thought leaders are all in on spaced repetition this year,
       | because next year they'll have moved on to something else,
       | because they need to have something new to talk about. In
       | Australia and the UK at least (I don't know the figures for other
       | countries), half of all teachers leave the profession within five
       | years of joining it, so most of your user base is
       | overenthusiastic twenty-somethings with no life experience (yes,
       | I was one of these) who will do whatever The Research tells them,
       | and the ones who stay long enough to gain leadership positions
       | tend not to grow out of this, so the classroom side of EdTech is
       | basically a bunch of fads, so it's impossible to build a stable
       | business in this space.
       | 
       | If you want to sell software to schools, go and work in a bunch
       | of them, find some obscure administrative problem, and solve
       | that.
        
         | rolandog wrote:
         | I partially agree with what you just posted, but -- walking
         | along your train of thought, I take a bit of issue with the
         | following paragraph (sliced for emphasis):
         | 
         | > So there seems to be a bit of a trend for people to build
         | flashcard-type tools at the moment, [...] so it's impossible to
         | build a stable business in this space.
         | 
         | I am of the radical idea that lots of things should not be for-
         | profit businesses (doesn't mean that it can't be profitable --
         | just not exorbitantly so), and that economist's mistaken goal
         | of exponential growth expectations is criminally separated from
         | the sigmoid limits to reality.
         | 
         | So, therefore, while I agree that EdTech is a bunch of fads, I
         | think the fact that EdTech is a thing is wrong.
         | 
         | And I agree with your main point that we should be chasing
         | accumulation and refinement of knowledge, and not doing some
         | sort of spring-cleaning every 10 years.
        
           | bombcar wrote:
           | "EdTech" is ripe for disruption - by a non-profit, open-
           | source entity that provides "school stuff as a service" but
           | is basically a lifestyle business.
           | 
           | It would have to be funded by adventure capitalists (e.g.,
           | retired techies having fun building stuff) for awhile, but it
           | could easily take over once it got traction.
        
         | udit99 wrote:
         | Interesting. I don't mean to detract from your main point but
         | as someone who's deeply into spaced repetition for the past 5-7
         | years (Daily Anki user + built my own spaced repetition systems
         | for learning various skills), I find myself disagreeing with
         | you on some things that you mentioned:
         | 
         | 1. Spaced Repetition is not a fad. It's the most consistent and
         | reliable way we we know for rote memorization (conditions
         | apply). And it's not a new thing either. It's been around since
         | the late 1800s. It just wasnt practical until the advent of
         | computers and mobile devices. So I'm skeptical that there is
         | another "something else" to move on to that is as impactful as
         | SRS.
         | 
         | 2. Not sure what the state of education in Australia these days
         | but speaking strictly from my school days in India
         | (1980s-1990s), something like spaced repetition would have been
         | a godsend for every single student. And I'm 100% sure a vast
         | majority of schools and teachers still havent heard of it.
         | 
         | 3. I've been learning German for the past few years from some
         | of the top private institutes in Vienna, Austria and let me
         | tell you that neither the teacher, nor the students have any
         | idea about spaced repetition.
         | 
         | That said, you're probably right about the business-viability
         | of such ventures because of the difficulty of selling to the
         | decision-makers, I just strongly disagree about Spaced
         | Repetition being a "flavor of the year"
        
           | sokoloff wrote:
           | I didn't read GP as making a judgment that spaced repetition
           | was new or a fad, but rather that in the environment of how
           | education decision-makers shift focus to new things, it's a
           | current flavor-of-the-year.
           | 
           | We saw elements of this with "new math", Singapore math, and
           | common core math, each label of fairly similar concepts
           | promising to improve kids' facility with math. Test scores
           | haven't leapt though.
        
             | udit99 wrote:
             | Yeah, you're probably right. I agree that the problem might
             | be shifting focus every year but the one difference with
             | your math examples is that Singapore Math/Common Core math
             | etc. all seem like different systems that don't build on
             | top of each other. You (I'm assuming here) can't focus on
             | Singapore Math one year, then the next year to add Common
             | Core math on top of that etc. Its one or the other.
             | 
             | Spaced repetition on the other hand is a cross-disciplinary
             | technique that just needs to be introduced and kept there.
             | There's nothing else out there to substitute it with. If
             | the young staff hype it up one year and then it becomes
             | part of the curriculum and then they move on to other fancy
             | edtech things, then there's nothing wrong with it.
        
           | cjs_ac wrote:
           | Sure, but there are all sorts of pendulum shifts in the
           | teaching zeitgeist. Spaced repetition was just an app-based
           | example: it's been a few years since I was in the classroom
           | so I'm not sure what the flavour of the year is, but if
           | spaced repetition were currently popular amongst
           | schoolteachers, the swing away from it that I would expect to
           | see would be to argue that memorisation isn't really learning
           | and that learning experiences should be about developing
           | deeper understanding, and so on. There is no measure of 'best
           | practice'; a lot of these shifts are driven by personal
           | preference.
        
             | udit99 wrote:
             | > argue that memorisation isn't really learning and that
             | learning experiences should be about developing deeper
             | understanding, Agreed, but if you ask anyone who's SR for
             | any amount of time will tell you: It's realllly hard to be
             | effective with it if you don't understand the underlying
             | concept. The order of operations is "first understand, then
             | drill". Of course, this comes with nuance. There are things
             | that just have to be drilled and others that don't even
             | need any drilling if you understand the concept. And I'd
             | expect those educators to know the difference.
             | 
             | > There is no measure of 'best practice'; a lot of these
             | shifts are driven by personal preference.
             | 
             | Again, you're probably right but using the example of SR
             | threw me off because it's the one thing where I think the
             | data is so clear that it's easily justifiable.
        
         | fidotron wrote:
         | > If you want to sell software to schools, go and work in a
         | bunch of them, find some obscure administrative problem, and
         | solve that.
         | 
         | I think this principle generalizes to: If you want to sell
         | software to X, go and work in a bunch of X, find some obscure
         | administrative problem, and solve that.
         | 
         | Although some people seemingly have a talent for selling
         | products into industries they have no idea about. I always
         | assume that means a highly motivated buyer.
        
         | FinnLobsien wrote:
         | There's also a different angle: EdTech doesn't have to sell to
         | schools, but could also be learner-facing.
        
       | FinnLobsien wrote:
       | I think an underrated aspect of this is also that YC is
       | ultimately a VC fund and so they're talking about companies that
       | have the potential to be massive, multi-billion dollar companies.
       | 
       | Many typical tarpit ideas (to do apps, habit trackers, note
       | taking etc.) can be great businesses for a couple of people
       | building software together but not have venture-scale outcomes.
       | 
       | I do agree that as soon as you get network effects
       | (recommendations, marketplaces etc.), SOOOO much is tarpit.
        
       | bob1029 wrote:
       | B2C is virtually impossible compared to B2B. This may not be
       | immediately apparent but it is so obvious in hindsight.
       | 
       | The biggest reason I think founders are going for B2C is because
       | they have zero clue about how to network and sell to other
       | businesses. It's easy to set up a shopify account. It's hard to
       | cold call your first prospect. Do you even have any prospects? Do
       | you know how to find them?
       | 
       | The advantage of B2B is that once you figure it out for the first
       | customer, you are on an exponential path to happiness. You can
       | practically cancel your marketing budget at that point. B2C
       | requires an ongoing assault on the dopamine economy. Unless you
       | can get someone on a subscription and program them to forget
       | about it, you're gonna get steamrolled by TikTok & friends.
        
         | nkzd wrote:
         | > because they have zero clue about how to network and sell to
         | other businesses. It's easy to set up a shopify account. It's
         | hard to cold call your first prospect. Do you even have any
         | prospects? Do you know how to find them?
         | 
         | How do you learn this skill? Any resources or books you
         | recommend?
        
           | gatnoodle wrote:
           | Sure, a lot of people have written about this but this isn't
           | a skill that you can learn from a book.
        
             | mettamage wrote:
             | Which is why it feels virtually impossible to many
             | founders. Some people may claim B2B is easier, but only if
             | you have the skill and it is hard to figure out how to
             | obtain it
        
               | bob1029 wrote:
               | Not everyone needs to be on the sales team. You only need
               | ~one person who knows how to do it. Once they get the
               | channels opened with the client and the technical people
               | are sending emails directly & regularly, even the most
               | closeted nerds (including those who might also be
               | founders) can begin to contribute meaningfully.
               | 
               | This is what being a "non-technical" founder is all about
               | - building bridges between people and organizations.
        
         | fud101 wrote:
         | The only B2B ideas I have would apply to one company i'm
         | familiar with, maybe a couple of similar companies in the same
         | space. How is that better than B2C?
        
           | nkzd wrote:
           | I guess the logic behind B2B vs B2C comes down this belief:
           | It is easier to sell one unit for $1 million than one million
           | units of something for $1.
        
           | HeyLaughingBoy wrote:
           | How big is that space in terms of businesses? Can you reach
           | them more easily than you could reach a similar $ value of
           | customers? Can you expand your reach and learn more about the
           | market once you're embedded? Are they easier to sell to than
           | consumers? Can you sell them support or maintenance
           | contracts?
           | 
           | etc...
        
         | carlosjobim wrote:
         | My experience is the complete opposite. B2B is almost
         | impossible, even when you have a great product for a great
         | price. B2C on the other hand is a delight, with much better
         | prospects for growing your clientele.
        
         | phtrivier wrote:
         | B2B puts you at the mercy of "your next customer's wished
         | feature".
         | 
         | The bigger the "B" you're trying to sell to, the bigger the
         | desire to say yes. This is a very dangerous path.
         | 
         | If you're DHH, you can say no. If you're responding to RFPs for
         | a living... It becomes complicated. Not impossible of course,
         | but it's a different path altogether.
        
           | bob1029 wrote:
           | > B2B puts you at the mercy of "your next customer's wished
           | feature".
           | 
           | Yes.
           | 
           | > The bigger the "B" you're trying to sell to, the bigger the
           | desire to say yes.
           | 
           | Absolutely.
           | 
           | > This is a very dangerous path.
           | 
           | You lost me here. What you term "a very dangerous path" I
           | call "a roadmap".
           | 
           | The bigger the customer, the more they can pay. Also, just
           | because it's 'B' and not 'C' doesn't mean there aren't humans
           | involved. You can go a long way (often, all the way) with a
           | simple 1:1 conversation with the most senior person
           | responsible for your project on the customer's side.
        
       | dzink wrote:
       | An idea is tarpit until someone, or some new tech, or regulation
       | cracks it.
       | 
       | YC has a rare opportunity and it squanders it. It is a hub that
       | gathers most problems and approaches to them in each discipline
       | and many many failures on them at least once a quarter and all of
       | that goes down the drain, instead of being published and explored
       | publicly. The energy of bright new founders is not spent re-
       | hashing the old but exploring the new. YC can still evolve into a
       | science hub for things people want with much more impact than it
       | does now. New founders want to protect IP and hold back
       | competition, so publish the failed ideas and approaches - make it
       | a competition. Show the full length and breadth of tarpit zones
       | and any time they may be cracking. This way new energy goes
       | towards better VC returns instead of falling into old cracks.
       | Build a Yelp of things people want that need to be built or
       | solved.
        
       | debarshri wrote:
       | Sometimes a tarpit idea might work because of founders execution.
       | Then the upside is huge.
       | 
       | For instance, some animals who survived the tarpit were naturally
       | selected for evolution.
       | 
       | Philosophically, idea of building a startup is a tarpit too. You
       | need lot of perseverance and courage to navigate out of it,
       | survive and eventually win.
        
       | davidedicillo wrote:
       | It's only a tarpit idea when you don't know it's a tarpit idea.
       | I'm building a bookmarking service. I have no illusions that this
       | will become anything more than a hobby project. Still, I love
       | solving specific problems for myself (specifically, making
       | consumption easier to deal with content overload).
        
         | noemit wrote:
         | this is neat. i think digg should come back.
        
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