It's truly amazing just how much of the posts and discussions on LW you repeatedly ignore, Phil. There is a plurality opinion here that it can be rational to execute a strategy which includes actions that don't maximize utility when considered as one-shot actions, but such that the overall strategy does better.

I can genuinely understand disagreement on this proposal, but could you at least acknowledge that the rest of us exist and say things like "first-order rationality finds revenge irrational" or "altruistic sacrifices that violate causal decision theory" instead?