He took a set of rats and made them drink the morphine solution for fifty-seven days, in their cage, alone. If drugs can hijack your brain, that will definitely do it. Then he put these junkies into Rat Park. Would they carry on using compulsively, even when their environment improved? Had the drug taken them over? In Rat Park, the junkie rats seemed to have some twitches of withdrawal—but quite quickly, they stopped drinking the morphine. A happy social environment, it seemed, freed them of their addiction. In Rat Park, Bruce writes, “nothing that we tried instilled a strong appetite for
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