All the objects in the physical universe are made up of atoms. Atoms, in turn, are made up of protons, electrons, and neutrons. These, in turn, are (as physicists also discovered in the early years of the twentieth century) all particles. And particles are made up of … Well, quite frankly, physicists don’t really know. But one thing we do know about particles is that each one is connected to every other one in the universe. They are all, at the deepest level, interconnected.
