Professor Jim Al-Khalili is Professor of Physics and Professor of Public Engagement in Science at the University of Surrey. From cryptanalysis and the cracking of the German Enigma Code during the Second World War to his work on artificial intelligence, Alan Turing was without doubt one of the greatest minds of the 20th century. An extraordinarily gifted mathematician, he is rightly regarded as the father of computer science having set in place the formal rules that govern the way every computer code ever written actually work. This lecture will be a celebration of one man’s enigmatic yet ultimately tragic life – a whirlwind tour of his genius, from whether computers can have consciousness to how a leopard gets its spots. Jim Al-Khalili OBE is an Iraqi-born British theoretical physicist, author and science communicator. He is Professor of Theoretical Physics and Chair in the Public Engagement in Science at the University of Surrey. He has become a familiar science personality in the British media. He has hosted several BBC productions about science and is a frequent commentator about science in other British media venues. This was a joint lecture between the Royal Society of Edinburgh and the University of Edinburgh School of Informatics. Recorded on Thursday 10 May 2012 at the George Square Lecture Theatre, The University of Edinburgh.