美国国会研究服务部：2024联邦部落协商：国会的背景和问题报告（英文版）

In a closed economy, investment equals saving. Investment in the economy determines the growth in the capital stock and therefore affects overall economic growth. Holding labor constant, growth in the capital stock also increases wages. These effects are generally viewed as desirable. From the standpoint of economic theory, however, increasing growth by increasing saving is a trade-off between present and future consumption. That is, there is a cost to saving, as it reduces current consumpti