> Milkman’s doctoral dissertation concluded that people would choose either heroin or amphetamines depending on how they liked to deal with stress. Heroin users

> Milkman’s doctoral dissertation concluded that people would choose either heroin or amphetamines depending on how they liked to deal with stress. Heroin users wanted to numb themselves; amphetamine users wanted to actively confront it. This seems kind of silly in retrospect. In the US, most heroin users chose heroin because they got addicted to prescription painkillers, and heroin has a similar effect while being much cheaper.