In 1935, Erwin Schrodinger proposed the now infamous thought-experiment known as Schrodinger's cat. A cat is placed in a sealed box with some way of killing it attached to a quantum process with a 50% chance of triggering it. The cat is then theoretically neither alive nor dead, but in some indeterminate 50 - 50 quantum state which will only be determined when the box is opened and the wave function collapsed. And ever since, cats have been afraid to get into sealed boxes.
What I can't understand is why my cats are afraid of getting into their cat cages to go to the vet. They have a grill door on them, and holes in the side. They can see out, and I can see in. Surely they understand that that means there's no danger of being Schrodingered?