Rational Choice Theory claims to be able to explain how all individuals make not just some of their choices, but all of their choices, all of the time. According to the theory, there is no difference in principle between choosing whether to buy apples rather than bananas or choosing whether to join a political revolution instead of staying at home and watching television. Given these claims to universal applicability, it is perhaps not surprising to find that over the last three or four decades Rational Choice Theory has become increasingly influential as a means of providing explanations...