[whc.03grady]

Please tell me where I've gone wrong.

So the cat is in the box with the particle that may or may not have decayed after ten minutes, setting off a charge that would kill the cat. The physicist says the cat is in a superposition, viz., is both alive and dead.

Why does the physicist get to invent a property (the superposition) that is, in principle, unobservable, and then assign it to the cat? Why doesn't the physicist instead say, "I don't know if the cat's alive or dead", or "I can't know if the cat's alive or dead"? Isn't science about what's observable, not making up stuff about what isn't or cannot be observed?