David Deutsch, Ph.D.
David Deutsch works at the Centre for Quantum Computation at the Clarendon Laboratory, Oxford University.
In the autumn of 2001, he denounced a fellow quantum physicist, Brian Josephson, for suggesting that quantum physics might lead to an explanation of “processes still not understood within conventional science such as telepathy”. Deutsch asserted: “It is utter rubbish. Telepathy simply does not exist.” (The Observer, September 30, 2001)
Josephson, a Nobel laureate, made his comment about telepathy in a booklet issued by the Royal Mail about an issue of stamps to mark the 100th anniversary of the Nobel Prizes. Deutsch said: “The Royal Mail has let itself be hoodwinked into supporting ideas that are complete nonsense”.
But Deutsch embodies a curious double standard about the need for scientific evidence. He is a proponent of a theory that there are billions of parallel universes to our own, expounded in his book The Fabric of Reality: The Science of Parallel Universes (1997). He also speculates freely on time travel. There is no evidence for either of these phenomena.
Deutsch highlights the remarkable way in which evidence-free speculation in some areas of science can coexist with dogma in others, while legitimate evidence is dismissed or denied.