I just wanted to clarify something conceptual with non-interacting particles. So if you have three identical non-interacting fermions (say electrons), is it true that they are distinguishable (since they're non-interacting)? Or are they indistinguishable since they're still identical?
The cat does not exist in linear superposition of states. It's the superposition of the radioactive substance that eventually forces the cat to be dead or alive. When the substance decays and triggers the Geiger counter, then it transitions into a new state.
I think part of the confusion may stem from how you understand the thought experiment. A cat is a macroscopic entity and does not exist in a superposition of states like, say, electrons can. You can think of the cat as being in one state at all times. What actually exists in a superposition of...