David Deutsch

British physicist — University of Oxford — who laid the theoretical foundations of quantum computing and whose epistemological philosophy (based on Karl Popper) argues for an optimistic view of human knowledge creation — author of The Fabric of Reality and The Beginning of Infinity.

Creates the Constructor Theory and the philosophical framework of Beginning of Infinity — Deutsch's argument (that problems are soluble given the right knowledge, that all evils are due to insufficient knowledge, and that optimism is the correct epistemological stance because problems can always in principle be solved) is the most thoroughgoing philosophical optimism grounded in hard physics.