Transcript:

So there's this many-worlds interpretation of quantum mechanics, which says that the universal wave function is objectively real. So, when a quantum measurement is made, there is no collapse of the wave function. The wave function continues evolving as governed by the Schrödinger equation.

What happens is that the universe makes a copy of itself, and in one branch, one outcome happens, and in the other branch, the other outcome happens.

And this is a concept that is mathematically rigorous, also heavy math. And it solves many problems. It solves the Schrödinger's cat problem; it solves the measurement problem, and it solves many problems.

But the most important thing is, or not important, the most interesting thing is that the person who came up with this, Hugh Everett, is by training a chemical engineer. After his chemical engineering, Hugh Everett went to Princeton to work on his PhD thesis. He worked with Wheeler, and he came up with this many-worlds interpretation, which went completely against the established Copenhagen interpretation of quantum mechanics.

And it takes a chemical engineer to step up and come up with a radically different explanation to a problem that breaks from tradition.