答案:【计分规则】: The British economist James Mead first proposed the conflict between internal and external equilibrium under the fixed exchange rate system in his monograph "The Balance of Payments" in 1951.He pointed out that under the open economy, when the exchange rate is fixed, the government only use the expenditure changing policy that affects the total social demand to adjust the internal and external equilibrium, so that it will fall into a policy dilemma that is difficult to balance internal and external goals, This situation is called " Mead conflict ".