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David Deutsch (born 1953 in Haifa, Israel) is a physicist at the University of Oxford. He is a non-stipendiary Visiting Professor in the Department of Atomic and Laser Physics at the Centre for Quantum Computation, Clarendon Laboratory. He pioneered the field of quantum computers, and is a proponent of the many-worlds interpretation of quantum mechanics.

Main article: The Fabric of Reality

In his 1997 book The Fabric of Reality, this interpretation, or what he calls the multiverse hypothesis, is one strand of a four-strand theory of everything. The four strands are:

1. Hugh Everett's many-worlds interpretation of quantum physics, "the first and most important of the four strands".
2. Karl Popper's epistemology, especially its anti-inductivism and its requiring a realist (non-instrumental) interpretation of scientific theories, and its emphasis on taking seriously those bold conjectures that resist falsification.
3. Alan Turing's theory of computation especially as developed in Deutsch's "Turing principle", Turing's universal Turing machine being replaced by Deutsch's universal quantum computer. ("The theory of computation is now the quantum theory of computation.")
4. Richard Dawkins's refinement of Darwinian evolutionary theory and the modern evolutionary synthesis, especially the ideas of replicator and meme as they integrate with Popperian problem-solving (the epistemological strand).

His theory of everything is (weakly) emergentist rather than reductive. It aims not at the reduction of everything to particle physics, but rather mutual support among multiverse, computational, epistemological, and evolutionary principles.

Politically, Deutsch is known to be sympathetic to libertarianism, and was a founder, along with Sarah Fitz-Claridge and Kolya Wolf, of the Taking Children Seriously movement. He is also an atheist.

He was awarded the Dirac Prize of the Institute of Physics in 1998^[1], and the Edge of Computation Science Prize in 2005^[2]. The Fabric of Reality was shortlisted for the Rhone-Poulenc science book award in 1998^[3].

• The Fabric of Reality, ISBN 0-14-014690-3

Deutsch is currently working on a book entitled The Beginning of Infinity, which he hopes to finish in early 2008.

• Karl Popper
• Many worlds
• Quantum computing
• Turing machine
• Deutsch-Jozsa algorithm

1. ^ Dirac prize award
2. ^ Edge of Computation Science Prize
3. ^ Rhone-Poulenc 1998 shortlist

• Deutsch's official homepage at Qubit.Org
• David Deutsch, extracts from Chapter 14: "The Ends of the Universe" of The Fabric of Reality: The Science of Parallel Universes—and Its Implications (London: Allen Lane The Penguin Press, 1997), ISBN 0713990619; with additional comments by Frank J. Tipler. Also available here and here.
• "It's much bigger than it looks" -- Edge
• New Scientist interview
• Video of David Deutsch's talk on the study of physics as central to the survival of the human species. Presented July 2005 at the TED Conference in Oxford, UK. Duration: 19:45
• Wired News: Interview

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