'... dense but exciting ... comprehensive and ambitious in scope ... a treasure trove of interesting and intriguing results.' The Times Literary Supplement 'The book is a treasure trove of interesting and intriguing results...'. The Times Literary Supplement 'I can unreservedly recommend this delightful book. It is an absolute pleasure to read and a more stimulating introductory text on evolutionary thinking of social institutions is hard to image ... Brain Skyrms has done us a great service, and I am looking forward to his next book.' Studia Logica