It is always rational to believe (or rather, act on the belief) that the world will not end. If you’re wrong you won’t have to pay up on any bets you’ve made.
This xkcd joke only works if the frequentist is not also a consequentialist 🤔
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Replying to
otoh given that it's impossible for the frequentist to both win and live to collect on it, I'd take the bet anyway and then refuse to pay up on grounds that any obligation to pay is invalidated by the bet's fundamental incoherence
and if the world does end, *I win*. ha!
