After Words with Paul Sabin Paul Sabin talked about his book, The Bet: Paul Ehrlich, Julian Simon and Our Gamble over Earth’s Future, in which he analyzes a bet made between economist Julian Simon and biologist Paul Ehrlich. More than 30 years ago, Mr. Simon made a bet with Mr. Ehrlich on the future prices of five metals, asserting that technological change and a booming market would keep the country prosperous. But Mr. Ehrlich predicted that rising populations would lead to overconsumption, taxed resources, and famine. Mr. Sabin argued that the opposing perspectives of the bettors - faith in free...