Leary reported eye-popping results: ten months after their release, only 25 percent of the psilocybin recipients had ended up back in jail, while the control group returned at a more typical rate of 80 percent. But when Rick Doblin at MAPS meticulously reconstructed the Concord experiment decades later, reviewing the outcomes subject by subject, he concluded that Leary had exaggerated the data; in fact, there was no statistically significant difference in the rates of recidivism between the two groups.
( Michael Pollan )
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