In 1900, the U.S. Census recorded a total population of 76.3 million, including 11 million farmers. Today, with a population nearing 340 million, the number of farmers has dropped to just 2.72 million. Each one percent increase in population corresponded to a 4.92 percent increase in farmer productivity. In 1900, life expectancy was just 47 years. So, who’s going to tell Ehrlich and Thanos they had it backwards?