Chapter 7, The Magus of the Multiverse, Interlude, The End of Explanation, Chapter 8, The Ultimate Free Lunch? Summary and Analysis

The next figure in Holt's quest is David Deustch, who argues that reality mandates its own comprehensibility. On his view, the universe is a universal quantum computer that can simulate any physically possible reality. Deustch's own ideas began in the 1980s, when he became fascinated with the many worlds interpretation of quantum theory, the brainchild of Hugh Everett, following Alan Turing in trying to render the idea in computational terms. The promise of a quantum computer is that a single, buildable physical object could generate an entire multiverse of options. The view entails that "mind" is identical across universes, like a giant crystal that orders them all.

Apparently Holt had reviewed...