Until the End of Time: Mind, Matter, and Our Search for Meaning in an Evolving Universe

by Brian Greene

This entails a peculiar conclusion: the reality that you and I and everyone else experiences is happening out there in other regions—in other universes—over and over again. Modify that reality in any manner that is not strictly forbidden by the laws of physics (you can’t violate the conservation of energy or electric charge, for example) and it is also out there, over and over again. It tickles the mind to fathom realms where alternate realities play out—Lee Harvey Oswald misfires, Claus von Stauffenberg succeeds, James Earl Ray doesn’t. Quantum aficionados will recognize a similarity to the so-called Many Worlds interpretation of quantum physics, which envisions that every possible outcome allowed by the quantum laws takes place in its own separate universe.