We noted that, as economists, we can't say which points on the PPF are preferred, or best, for the consumer. However, we can say something about points that would be preferred to a point like G, a point inside the PPF.

   As long as our student considers both fun and good grades good things, we know of some points that she would prefer to G, no matter what her tastes. Remember, as noted before, at a point like G the opportunity cost of grade points in terms of fun is zero.

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