Description My illustration of the thought experiment 'Schrdinger's cat.' In 1935 Ervin Schrdinger wrote to Einstein on the problem in the interpretation of Quantum Mechanics. This hypothetical experiment was one of the devices he used to demonstrate the problems he saw with modern physicist's theories. A cat is placed in a box, together with a radioactive atom. If the atom decays, and the geiger-counter detects an alpha particle, the hammer hits a flask of prussic acid (HCN), killing the cat. The paradox lies in the clever coupling of quantum and classical domains. Before the observer opens the box, the cat's fate is tied to the wave function of the atom, which is itself in a superposition of decayed and undecayed states. Thus, said Schroedinger, the cat must itself be in a superposition of dead and alive states before the observer opens the box, ``observes'' the cat, and ``collapses'' it's wave function.Don't feel bad if you don't get it the first time, I am still not sure that I do.In any case this is one of my first coral painter experiences and it was like pulling teeth.