The advantages of cheating strangers on one occasion may not be worth the mental effort of thinking of a way to do so .
Furthermore , as David D. Friedman observes , the benefit of cheating the stranger on one occasion may not be worth the mental effort of conceiving a way to do so and weighing the odds of suffering the consequences . ( Sen , in fact , has participated in the development of public choice theory , in such works as Collective Choice and Social Welfare . )
Public choice