The core challenge of macroeconomics is to allocate society’s resources to their best use. Workers who choose to work should find jobs; factories should deploy their capital efficiently; and the part of income that is saved rather than consumed should be invested to improve future wellbeing.
宏观经济学的核心挑战是配置社会资源，加以最佳利用。选择工作的工人应该找到岗位；工厂应该有效部署其资本；用作储蓄而非消费的收入应该投资以改善未来福祉。