The highest form of ignorance is when you reject something you don’t know anything about. — Wayne Dyer - Max Tegmark

Will life in our Universe fulfill its potential or squander it? This depends to a great extent on what we humans alive today do during our lifetime, and I’m optimistic that we can make the future of life truly awesome if we make the right choices.

Let’s instead define life very broadly, simply as a process that can retain its complexity and replicate. What’s replicated isn’t matter (made of atoms) but information (made of bits) specifying how the atoms are arranged. When a bacterium makes a copy of its DNA, no new atoms are created, but a new set of atoms are arranged in the same pattern as the original, thereby copying the information. In other words, we can think of life as a self-replicating information-processing system whose information (software) determines both its behavior and the blueprints for its hardware.

THE BOTTOM LINE • Parallel universes are not a theory, but a prediction of certain theories. • Eternal inflation predicts that our Universe (the spherical region of space from which light has had time to reach us during the 14 billion years since our Big Bang) is just one of infinitely many universes in a Level I multiverse where everything that can happen does happen somewhere. • For a theory to be scientific, we need not be able to observe and test all its predictions, merely at least one of them. Inflation is the leading theory for our cosmic origins because it’s passed observational tests, and parallel universes seem to be a non-optional part of the package. • Inflation converts potentiality into reality: if the mathematical equations governing