Gresham's law Gresham's law In economics, Gresham's law is a monetary principle stating that "bad money drives out good". For example, if there are two forms of commodity money in circulation, which are accepted by law as having similar face value, the more valuable commodity will gradually disappear from circulation. The law was named in 1860 by Henry Dunning Macleod, after Sir Thomas Gresham (1519–1579), who was an English financier during the Tudor dynasty. However, there are numerous predecessors. The law had been stated earlier by Nicolaus Copernicus; for this reason, it is occasionally known as the Gresham–Copernicus law. It was also
The Most Good You Can Do Law School professor Eric Posner reviewed the book for "Slate Magazine", concluding: "So what’s an effective altruist to do? The utilitarian imperative to search out and help the people with the highest marginal utility of money around the world is in conflict with our limited knowledge about foreign cultures, which makes it difficult for us to figure out what the worst-off people really need.* For this reason, donations to Little League and other local institutions you are familiar with may not be a bad idea. The most good you can do may turn out to be—not much." Posner wrote a