actually it's the opposite of Schrödinger's cat, as the state of the hidden object is known and it only becomes unknowable when the container is opened
youtu.be/UjaAxUO6-Uw?...

As a kid I would read every word of text I could get my hands on. This one always seemed like a catch-22 paradox to me. "Hey, I want my money back, these band-aids aren't sterile!" - "how do you know?"