"If things are too similar, the dialogue is not very interesting. If you put in contrast, big and small, abstract and representational, you set up the possibility of a discourse."

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It is rational to choose the right means to your ends to develop very elegant abstract formal theories of rational choice, and then turn these into what look like moral theories. Philosophers tend to be ravished by the formal beauty of such theories, and they don't pay much attention to the fact that our human limitations make them pretty useless in practice, while the simple point about instrumental reasoning is too shallow to be of much real moral interest.

— Allen W. Wood