meta-note: I've noticed a tendency on HN for commenters to impeach people sometimes without good reason (this case may or may not be a good example, that's not the point) On several articles today the comments basically boiled down to an ad-hominem -- and this was on subjects as far-ranging as naval warfare, startups, science, etc.

I'd like to call it out more, but there's so much of it -- it's a lost cause, I think.