When Vancouver blocked all heroin from entering the city so successfully that the "heroin" being sold had zero actual heroin in it, the addicts' behavior didn't change. Some 20 percent of U.S. soldiers in Vietnam were addicted to heroin, leading to terror among those anticipating their return home; but when they got home 95 percent of them within a year simply stopped. (So did the Vietnamese water buffalo population, which had started eating opium during the war.) The others soldiers had been addicts before they went and/or shared the trait most common to all addicts, including gambling addicts: an unstable or traumatic childhood.

Most people (90 percent according to the U.N.) who use drugs never get addicted, no matter what the drug, and most who do get addicted can lead normal lives if the drug is available to them; and if the drug is available to them, they will gradually stop using it.

But, wait just a minute. Scientists have *proven* that drugs are addictive, haven't they?  Well, a rat in a cage with absolutely nothing else in its life will choose to consume huge quantities of drugs. So if you can make your life resemble that of a rat in a cage, the scientists will be vindicated. But if you give a rat a natural place to live with other rats to do happy things with, the rat will ignore a tempting pile of "addictive" drugs.

And so will you. And so will most people. Or you'll use it in moderation.

Before the War on Drugs began in 1914 (a U.S. substitute for World War I?), people bought bottles of morphine syrup, and wine and soft drinks laced with cocaine. Most never got addicted, and three-quarters of addicts held steady respectable jobs.

Is there a lesson here about not trusting scientists? Should we throw out all evidence of climate chaos? Should we dump all our vaccines into Boston Harbor? Actually, no. There's a lesson here as old as history: follow the money. Drug research is funded by a federal government that censors its own reports when they come to the same conclusions as Chasing the Scream , a government that funds only research that leaves its myths in place. Climate deniers and vaccine deniers should be listened to. We should always have open minds. But thus far they don't seem to be pushing better science that can't find funding. Rather, they're trying to replace current beliefs with beliefs that have* less* basis behind them. Reforming our thinking on addiction actually requires looking at the evidence being produced by dissident scientists and reformist governments, and it's pretty overwhelming.

So where does this leave our attitudes toward addicts? First we were supposed to condemn them. Then we were supposed to excuse them for having a bad gene. Now we're supposed to feel sorry for them because they have horrors they cannot face, and in most cases have had them since childhood? There's a tendency to view the "gene" explanation as the solider excuse. If 100 people drink alcohol and one of them has a gene that makes him unable to ever stop, it's hard to blame him for that. How could he have known? But what about this situation: Of 100 people, one of them has been suffering in agony for years, in part as a result of never having experienced love as a baby. That one person later becomes addicted to a drug, but that addiction is only a symptom of the real problem.

Now, of course, it is utterly perverse to be inquiring into someone's brain chemistry or background before we determine whether or not to show them compassion. But I have a bit of compassion even for people who cannot resist such nonsense, and so I appeal to them now: Shouldn't we be kind to people who suffer from childhood trauma? Especially when prison makes their problem worse?  But what if we were to carry this beyond addiction to other undesirable behaviors? There are other books presenting similarly strong cases that violence, including sexual violence, and including suicide, have in very large part similar origins to those Hari finds for addiction. Of course violence must be prevented, not indulged. But it can best be reduced by improving people's lives, especially their young lives but importantly also their current lives. Bit by bit, as we have stopped discarding people of various races, gender, sexual orientation, and disabilities as worthless, as we begin to accept that addiction is a temporary and non-threatening behavior rather than the permanent state of a lesser creature known as "the addict," we may move on to discarding other theories of permanence and genetic determination, including those related to violent criminals.

Someday we may even outgrow the idea that war or greed or the automobile is the inevitable outcome of our genes.

Somehow blaming everything on drugs, just like taking drugs, seems much easier.

Watch Johann Hari on Democracy Now

HeJohann Hari is schduled to be interviewed on Talk Nation Radio. Those who have read the book are invited to send in questions to be asked during the interview.