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Companion review of Prof: Alan Turing Decoded by Dermot Turing

The Turing Centenary in 2012 prompted the release of new editions of two biographies of Alan Turing (Andrew Hodges’ Alan Turing: The Enigma and Alan’s mother Ethel Sara Turing’s Alan M. Turing, Centenary Edition), and the publication of a new biography (Jack Copeland’s Turing: The Pioneer of the Information Age). This companion review to David Hamer’s review of Prof will comment on Prof in the light of those three biographies. Andrew Hodges’ biography remains the standard reference for the life and contributions of Alan Turing, but the detail in and the length of Alan Turing: The Enigma can overwhelm a reader. Prof is much shorter, and although the ideas of Alan’s work are discussed, the details of his work do not appear. Prof focuses on Alan Turing’s life and is a mixture of a family view of Alan and a biographer’s view of Alan. Dermot Turing, the author of Prof, is the son of John Turing, Alan’s older brother. Sara Turing’s Alan M. Turing, which was written not long after Alan’s death, is “a mother’s story” of her son: