>[!abstract] >In quantum mechanics, Schrödinger's cat is a thought experiment concerning quantum superposition. In the thought experiment, a hypothetical cat may be considered simultaneously both alive and dead, while it is unobserved in a closed box, as a result of its fate being linked to a random subatomic event that may or may not occur. This experiment viewed this way is described as a paradox. This thought experiment was devised by physicist Erwin Schrödinger in 1935 in a discussion with Albert Einstein to illustrate what Schrödinger saw as the problems of the Copenhagen interpretation of quantum mechanics (Wikipedia, 2025). >[!related] >- **North** (upstream): [[Quantum mechanics]] >- **West** (similar): [[Wigner’s Friend]] >- **East** (different): [[Classical realism]] >- **South** (downstream): [Quantum superposition]