Spin two toy tops in opposite directions. When they bump into each other they both stop. All fun stops. This experiment says when they bump into each other

Spin two toy tops in opposite directions. When they bump into each other they both stop. All fun stops. This experiment says when they bump into each other ones spinning a certain direction always have a little spin to it left over. A tiny bit of fun still exists. That little bit of fun is all physical matter in the universe.