A real historical challenge. Or is it?

Malcolm Gladwell’s review of a new book on Operation Mincemeat demonstrates the difficulties of interpreting self-interested and partial sources, of determining cause and effect, and generally writing any kind of coherent history. This is a history of British intelligence efforts during WWII to feed misinformation to the Germans in a way that they would find it convincing. (Extra credit for non-gratuitous James Bond history)