People who are given opiates after operations - sometimes for days - do not become addicts in the sense that I'm talking about. Moreover, it's been shown that heroin addicts have to make considerable efforts - in other words to be determined - to become addicts, and addicted; and on average it takes them about a year or so. In other words, heroin does not hook them, they hook heroin. And this, I think should suggest, is a typical example of the way that when we think about social problems, or the way many of us think about social problems, we ascribe agency not to agents but to inanimate objects and substances, and forces.