Wikipedia articles are the most generic genre of HN submission. They're ok when a topic is obscure and undiscussed, and a high-quality article from another source isn't available. It turns out, though, that one was posted yesterday: https://news.ycombinator.com/item?id=23231510. It seems that polywater has been making the rounds somewhere?
Since, all other things being equal, that's a better submission, I'm going to swap this thread out for that one and merge the comments thither.
This issue with Wikipedia submissions has been coming up a lot lately. Recent explanations:
https://news.ycombinator.com/item?id=23239405
https://news.ycombinator.com/item?id=22990237