Not really a review, but this book proved to me that I have two degrees of separation from Wittgenstein and three from Adolf Hitler! I used to work for a man called Matthew Toulmin, who was co-author Professor Stephen Toulmin's son; and Professor Toulmin worked with Wittgenstein when he went to America after the war! (And as there is evidence that Wittgenstein attended the same school as Hitler, that's where I get that connection...)