Quote Originally Posted by Seraphim View Post
Sort of a Schrodinger's cat type thing going on.
Similar, but not exactly the same. During the time the cat is not observed, while there is a probability that it is dead and a probability that it is alive, the Copenhagen interpretation says that the cat exists in a hybrid state which contains both the alive and the dead states.

Billy might say that there is no cat, because it is not observed, whereas the CH says that the cat exists in the hybrid state until it is observed and it's state "collapses" into either the alive or dead state.

The key difference is that the CH does not doubt the existence of the cat. In a way, they do the opposite by introducing the hybrid state that includes two possible states for the cat. Maybe Billy would say that a third state, one of nonexistence, should be included as well ;-p