endoself comments on Pascal's Muggle: Infinitesimal Priors and Strong Evidence - Less Wrong
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You still get a probability function without Savage's P6 and P7, you just don't get a utility function with codomain the reals, and you don't get expectations over infinite outcome spaces. If we add real-valued probabilities, for example by assuming Savage's P6', you even get finite expectations, assuming I haven't made an error.