Long before debates about marijuana legalization hit mainstream politics, the 1960s police drama Dragnet touched on the topic in a surprisingly forward-thinking way. In the episode titled The Big High, detectives Joe Friday and Bill Gannon are approached by a concerned father worried that his daughter and son-in-law are smoking marijuana—and may soon spiral into harder drugs like heroin. But it's the son-in-law’s response that steals the scene. When confronted, he calmly predicts a future where