Unless two people who are producing two goods have exactly the same opportunity costs, each will have a comparative advantage in a different good.

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This is the basic principle of comparative advantage in economics. If two people have different opportunity costs (i.e. have to give up different amounts of their time or resources to produce a good), then they will have a comparative advantage in producing a different good. This leads to mutually beneficial trade, where each person specializes in producing the good they have a comparative advantage in and then trades with the other person for the good they do not specialize in.

Unless Two People Who Are Producing Two Goods Have Exactly