true...wouldn't pass for particularly insightful advice on a day trading forum, never mind Hacker News. The very first thing, volume is the cause for price, is

true...wouldn't pass for particularly insightful advice on a day trading forum, never mind Hacker News. The very first thing, volume is the cause for price, is only true in 'normal' markets, until it isn't. When there's no bid, prices drop massively on no volume, see e.g. Russia this week. Go read Schwager, John Train, Buffett, Graham, Bernstein, Malkiel.