“We have to remember that what we observe is not nature in itself but nature exposed to our method of questioning” (Heisenberg).

(As Dr. Fred Alan Wolf, a physicist popularly known as Dr. Quantum, says, “It boils down to this—the universe doesn’t exist without a perceiver of that universe.")

practical purposes, we can be completely satisfied with it. But if you take quantum theory seriously beyond practical purposes, it has baffling implications”12 [emphasis in original]. Further, it “is the most battle-tested theory in all of science. It has no competitors.… Niels Bohr, a founder of quantum theory, warned that unless you’re shocked by