[whereismyacc]

> There are no probability distributions over possible states when there is perfect knowledge of the state.

I know very little about physics but I thought that the leading interpretations of quantum physics say that the probability distribution is all we can know about a system. The entropy is not due to due to a lack of information about the quantum state, but because the outcomes are inherently stochastic?

[kgwgk]

Entropy is about the state - not about “outcomes”.

“All we can know” is the precise state - at least in principle - and entropy is zero in that case.