> a quantum effect that's visible in very large systems Well, in a certain sense, chemistry and solid state, and the very existence of atoms are also macroscop

> a quantum effect that's visible in very large systems Well, in a certain sense, chemistry and solid state, and the very existence of atoms are also macroscopically-visible quantum phenomena. You do a science class with kids in school and show them static electricity, little pieces of paper dancing in an electric field - that's quantum. That's electric fields interacting, which is an exchange of virtual photons, which is a quantum phenomenon. We really are jut waves on the surface of an ocean of quantum phenomena.