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Prices of the five materials included in the Simon-Ehrlich wager, 1900 to 2022

The change in the inflation-adjusted price of the five materials included in the wager between Julian Simon and Paul Ehrlich in the 1980s. Simon bet that priceswould fall or stay constant between 1980 and 1990; Ehrlich bet that they would increase. Simon won the bet.

ChromiumChromium19002022194019601980$1kCopperCopper19002022194019601980$5kNickelNickel19002022194019601980$20kTungstenTungsten19002022194019601980$50kTinTin19002022194019601980$20k
Prices of the five materials included in the Simon-Ehrlich wager

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