Physicist Max Tegmark: Mathematics and the Ultimate Nature of Reality

Just as some of us are getting used to the idea of the multiverse, along comes Max Tegmark telling us that we're not thinking big enough. According to Max, there are actually multiple multiverses containing endless copies of and variations on the "pocket universe" we've quaintly come to think of as everything. And while it may sound like he's tripping, Max assures us that he's only high on mathematics and logic, following where they lead. In our tour of the multi-multiverse, he and I discussed the implications of infinite spacetime, eternal inflation, the quantum mechanical wave function, the many worlds interpretation and the idea that reality is at bottom mathematical.