> I thought it was human upvotes and maybe a few human mods
That’s the algorithm of HN :)
It computes the score of posts based on some combination of time since posted + number of comments + number of upvotes, etc.
> It would be interesting to determine why HN still works btw. It's a pretty unified community that is fairly large.
> Is the main reason that it's basically a non profit?
Yea I think so. Being driven not for profit, plus having a specific overarching guideline for what type of content belongs here;
> On-Topic: Anything that good hackers would find interesting. That includes more than hacking and startups. If you had to reduce it to a sentence, the answer might be: anything that gratifies one's intellectual curiosity.
> Off-Topic: Most stories about politics, or crime, or sports, or celebrities, unless they're evidence of some interesting new phenomenon. Videos of pratfalls or disasters, or cute animal pictures. If they'd cover it on TV news, it's probably off-topic.
https://news.ycombinator.com/newsguidelines.html