one of the things that shocked me when I first started to understand what was going on, when I discovered that 80 to 90 percent of the people who act… - Carl Hart

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one of the things that shocked me when I first started to understand what was going on, when I discovered that 80 to 90 percent of the people who actually use drugs like crack cocaine, heroin, methamphetamine, marijuana—80 to 90 percent of those people were not addicted. I thought, “Wait a second. I thought that once you use these drugs, everyone becomes addicted, and that’s why we had these problems.” That was one thing that I found out. Another thing that I found out is that if you provide alternatives to people—jobs, other sort of alternatives—they don’t overindulge in drugs like this. I discovered this in the human laboratory as well as the animal laboratory. The same thing plays out in the animal literature.