In the past week, there’s been a flurry of media coverage around a new book called Tell Your Children: The Truth About Marijuana, Mental Illness, and Violence. One of the main points is that legalization is a terrible idea, because legal pot is already causing more people to become schizophrenic and psychotic, and people who are schizophrenic and psychotic are more likely to commit violent crimes. Alex Berenson, the book’s author — a former journalist who spent the past decade or so writing mysteries and thriller novels — landed plum op-eds in The New York Times and The Wall Street Journal. He appeared on Fox and Friends and Tucker Carlson Tonight. And the pop-psych theorist Malcolm Gladwell wrote an entire New Yorker article repeating and promoting the book’s thesis.
And yet, this theory is deeply flawed. After five years of