Saving means different things to different people. To some, it means putting money in the bank. To others, it means buying stocks or contributing to a pension plan. But to economists, saving means only one thing—consuming less out of a given amount of resources in the present in order to consume more in the future. […]| Econlib
The world’s population increased by 50 percent between 1900 and 1950 and by 140 percent between 1950 and 2000, and is projected by the United Nations to increase by just under 50 percent between 2000 and 2050. Of the 3.44 billion increase in the number of people between 1950 and 2000, only 8 percent was […]| Econlib
Investment is one of the most important variables in economics. On its back, humans have ridden from caves to skyscrapers. Its surges and collapses are still a primary cause of recessions. Indeed, as can be seen in Figure 1, investment has dropped sharply during almost every postwar U.S. recession. As the graph suggests, one cannot […]| Econlib
The growth of productivity—output per unit of input—is the fundamental determinant of the growth of a country’s material standard of living. The most commonly cited measures are output per worker and output per hour—measures of labor productivity. One cannot have sustained growth in output per person—the most general measure of a country’s material standard of […]| Econlib
Economic competition takes place in markets—meeting grounds of intending suppliers and buyers.1 Typically, a few sellers compete to attract favorable offers from prospective buyers. Similarly, intending buyers compete to obtain good offers from suppliers. When a contract is concluded, the buyer and seller exchange property rights in a good, service, or asset. Everyone interacts voluntarily, […]| Econlib
When asked by mathematician Stanislaw Ulam whether he could name an idea in economics that was both universally true and not obvious, economist Paul Samuelson’s example was the principle of comparative advantage. That principle was derived by David Ricardo in his 1817 book, Principles of Political Economy and Taxation. Ricardo’s result, which still holds up […]| Econlib
