AMA | October 2024

2911.882 - 2931.518 Sean Carroll

They're not primarily concerned with the fact that the probability is given by the wave function squared. that's kind of obvious. Like even though that's what you say you're deriving, there's nothing else it could have been. It's not like, well, it could have been equal to the wave function or the logarithm of the wave function or whatever. The wave function itself is a complex number.