The Physics Behind Schrödinger's Cat Paradox

A cat is placed in a steel box along with a Geiger counter, a vial of poison, a hammer, and a radioactive substance. When the radioactive substance decays (it decays as a random process), the Geiger detects it, triggers the hammer, and release the poison, which kills the cat.

Until the box is opened, the cat's state is entirely unknown. Therefore, the cat can be treated as both alive and dead simultaneously until it is observed. If you try to make predictions about the cat's status, you're possibly going to be wrong. But if you assume it's a combination of all of the possible states, you'll be correct.

Really minute things don't obey Newton's Laws. The rule that we use to govern the motion of a ball or car can't be used to explain how an electron or atom works.