Can Many-Worlds Theory Rescue Us From Boltzmann Brains?
Can you trust the world to be consistent? Scientists don’t have much choice. They need to assume that objective observations of the universe can be trusted.
This assumption has allowed us to develop powerful theories about the inner workings of the cosmos, but it has, paradoxically, also shown us the possibility that we might be deceived after all. It’s an idea known as “Boltzmann’s brain,” and it stems from some of the deepest questions in physics.