It's fine to say "X is broken", but I doubt you can find anyone on Hacker News who didn't read an article like this years ago and thus already knows X is broken. This article is beating a dead horse. The fact remains, captchas are the worst technique to prevent bots from filling out a form, except for all the other ones.

Yes, though, to be fair, this particular horse does seem to find a way to get deader as the years go on.

When a horse dies, it doesn't stay in a constant preserved state forever, it slowly decays :)

Right now I think the best solution is no captcha. HN doesnt use one for the sign up form. Yes, the HN community is flooded, but for the most part I dont think a captcha would change that.

HN is a (largely) community moderated content aggregation site. What if you don't have the benefit of a community to moderate? If you're an email service and want to stop bots from signing up and spamming the world at large, how would you do that?