Another old study from the U.S. Department of Justice found that marijuana use seemed to fall in some states that decriminalized the drug. The experts believe this phenomenon is in part because there’s no game: rewards become predictable. Other research shows alcoholism rose 300 percent during Prohibition, when the government made alcohol illegal from 1920 to 1933. We still celebrate some of the scarcity loop excitement of bootlegging with NASCAR, a sport that evolved from bootleggers who souped up their vehicles to outrun authorities.
