What do other people here think of quantum Bayesianism as an interpretation of quantum mechanics? I’ve only just started reading about it, but it seems promising to me. It lets you treat probabilities in quantum mechanics and probabilities in Bayesian statistics as having the same ontological status: both are properties of beliefs, whereas in some other interpretations of quantum mechanics, probabilities are properties of an external system. This match allows quantum mechanics and Bayesian statistics to be unified into one overarching approach, without requiring you to postulate additional entities like unobserved Everett branches.
My probability that quantum Bayesianism is onto something is .05. It went down a lot when I read Sean Carroll’s book Something Deeply Hidden. .05 is about as extreme as my probabilities get for the parts of quantum physics that are not settled science since I’m not an expert.
What do other people here think of quantum Bayesianism as an interpretation of quantum mechanics? I’ve only just started reading about it, but it seems promising to me. It lets you treat probabilities in quantum mechanics and probabilities in Bayesian statistics as having the same ontological status: both are properties of beliefs, whereas in some other interpretations of quantum mechanics, probabilities are properties of an external system. This match allows quantum mechanics and Bayesian statistics to be unified into one overarching approach, without requiring you to postulate additional entities like unobserved Everett branches.
My probability that quantum Bayesianism is onto something is .05. It went down a lot when I read Sean Carroll’s book Something Deeply Hidden. .05 is about as extreme as my probabilities get for the parts of quantum physics that are not settled science since I’m not an expert.
Could you summarize what Carroll says that made you update so strongly against it?
My memory is not that good. I do recall that it is in the chapter “Other ways: alternatives to many-worlds”.