Concept

Simon–Ehrlich wager

Summary

The Simon–Ehrlich wager was a 1980 scientific wager between business professor Julian L. Simon and biologist Paul Ehrlich, betting on a mutually agreed-upon measure of resource scarcity over the decade leading up to 1990. The widely-followed contest originated in the pages of Social Science Quarterly, where Simon challenged Ehrlich to put his money where his mouth was. In response to Ehrlich's published claim that "If I were a gambler, I would take even money that England will not exist in the year 2000" Simon offered to take that bet, or, more realistically, "to stake US

10,000 ... on my belief that the cost of non-government-controlled raw materials (including grain and oil) will not rise in the long run." Simon challenged Ehrlich to choose any raw material he wanted and a date more than a year away, and he would wager on the inflation-adjusted prices decreasing as opposed to increasing. Ehrlich chose copper, chromium, nickel, tin, and tungsten. The bet was formalized on September 29, 1980, with September 29, 1990, as the payoff date. Ehrlich lost the bet, as all five commodities that were bet on declined in price from 1980 through 1990, the wager period. In 1968, Ehrlich published The Population Bomb, which argued that mankind was facing a demographic catastrophe with the rate of population growth quickly outstripping growth in the supply of food and resources. Simon was highly skeptical of such claims, so proposed a wager, telling Ehrlich to select any raw material he wanted and select "any date more than a year away," and Simon would bet that the commodity's price on that date would be lower than what it was at the time of the wager. Ehrlich and his colleagues picked five metals that they thought would undergo big price increases: chromium, copper, nickel, tin, and tungsten. Then, on paper, they bought

200 worth of each, for a total bet of $1,000, using the prices on September 29, 1980, as an index. They designated September 29, 1990, 10 years hence, as the payoff date.

Official source

https://en.wikipedia.org/wiki/Simon–Ehrlich_wager

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