It seems like common sense. But John, by contrast, thought the rate of use would hold steady: If being ostracized by your family, riven with disease, and plunged into poverty didn’t affect your decision to use, how would a few free heroin reefers make a difference? It turns out both sides were wrong. Drug use didn’t rise, and it didn’t hold steady. It actually fell—including among the people who weren’t being given a prescription.
