People acting in their own self-interest try to gain at the expense of others in exchange leads to someone necessarily losing in a voluntary exchange.

Question

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People acting in their own self-interest can still engage in voluntary exchanges where both parties benefit. It is not a zero-sum game where one person necessarily loses. In fact, the concept of comparative advantage in economics suggests that both parties can benefit from trade even if one party is more efficient at producing a good or service.

People Acting in Their Own Self-Interest Try to Gain at the Expense