Where Quantum Probability Comes From
Carroll is a big advocate of the Many Worlds Interpretation, so it&#x27;s nice to see some other interpretations getting a decent hearing in this article as well as a decent treatment of some academic concerns about MWI. That&#x27;s a testament to his humility as a researcher.<p>I must admit I struggle with the MWI Born rule derivations based on rational credence. I don&#x27;t see why proving that one ought to assign credence in such and such a way is sufficient to prove that that&#x27;s the way nature <i>is</i>. It feels too much like deriving an &quot;is&quot; from an &quot;ought&quot;, although in a slightly different way than what Hume objected to!