I've just finished How to Cheat at Everything by Simon Lovell. It's a good read, although the lengthy descriptions of false cuts, dodgy deals, and ways to conceal or peek at what you shouldn't during high-stakes card games got repetitive. In fact, at some level the whole book is extremely repetitive: there is always somebody looking for an angle and if you're the producer, consumer, or user of anything you are a potential target. Sometimes the angle is knowledge. Being aware of, or being able to calculate, probabilities will protect against some scams, such as those at the fairground or in amusement arcades. In them the punter is lured in through social engineering to play a game they will never win. That's not to say they won't get some return, of course, just that its value will be minuscule relative to the cost. Sometimes the angle is ambiguity. Bar bets are essentially riddles for money and the setup will make them sound like a sure win for the punter....