Regarding Bitcoin, Rule #3 might apply: "There's nothing wrong with speculating — provided you do it with money you can afford to lose. But the money that's pr

Regarding Bitcoin, Rule #3 might apply: "There's nothing wrong with speculating — provided you do it with money you can afford to lose. But the money that's precious to you shouldn't be risked on a bet that you can outperform other investors." Edit: Rule #12 addresses it more directly: "Speculate only with money you can afford to lose."