“Of course, remember that there’s no such thing as objective probability: The “real” probability is 1 for however the multiverse is and 0 for everything else. Probabilities are tools that we use to express our own ignorance, and it’s convenient to think of them as though they represent “actual randomness” over different outcomes (even though there is no such thing as “actual randomness”).”

— Brian Tomasik, Why Maximize Expected Value?