The first 50 pages or so were pretty stiff and I didn't think I'd finish this one. But then, every other page or so, he'd take one of my preconceptions about drugs, behavior, or society and smash it into teeny tiny bits. Also, as he progressed through his own amazing life story, the book flowed better for me. By the time he got to the science that has transformed his own ideas about how we mishandle drug use/abuse in America, I was completely on board. The science wasn't too dense for me, a non-scientific reader.
One of the best things Hart did was make clear to a lay reader the difference between public policy based on anecdotal (often hysterical) "evidence" and policy based on thorough, dispassionate science. He shines a light on some forms of drug research for which the data don't remotely support the dire conclusions--which are then hyped into charicature by the media.
My favorite example: Have you heard about the experiments in which rats will perform a task, such as tapping a bar, in order to get a hit of cocaine or heroin, and they just tap-tap-tap that bar until they die? Sure, I'd heard of that one. But those rats, Hart points out, were isolated in a distinctly un-rat-like environment. They were the rat equivalent of bored/scared/pissed. When the same type of experiment was performed on rats that lived more naturally with other rats, having sex, burrowing in dark places, driving tiny race cars (OK, I made that last one up), and otherwise having plenty of meaningful stuff to do, they often didn't tap that bar enough to even be considered addicted, much less to OD. Haven't heard of that experiment before? Me neither.
Hart says some drug research is skewed because reinforcing the demonization of drugs helps researchers compete for grants. It also happens because the researchers truly believe--as Hart once did--the underlying myths about the nature, extent and effects of drug addiction. Hart doesn't crusade for legalizing drugs. It's a nuanced argument I won't even try to summarize, other than to say he makes a strong case for at least decriminalizing drugs and devoting more resources to studying the potential effects of legalization/decriminalization.
His point is that we have to stop the cycle of incarcerating drug users, thus making it nearly impossible for them to get jobs, parent their children, and generally have a stake in a civil society. Drugs and addiction do shatter lives, no question. But the underlying problem isn't the drugs, it's the misguided war on drugs.