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The revolt of the guinea pigs

How to Change Your Mind

“The revolt of the guinea pigs” names a historical reversal: Ken Kesey, first an unwitting subject in a government LSD experiment, went on to organize psychedelic events with the Merry Pranksters. The phrase recasts the research subject as an active resister and links an experiment sponsored by the Central Intelligence Agency to a much wider cultural upheaval.

The experiment behind the phrase

In 1960, Kesey received seventy-five dollars to try an experimental drug in a research program at Menlo Park Veterans Hospital. The Central Intelligence Agency had sponsored the research as part of MK-Ultra, its decade-long effort to discover whether LSD could be weaponized. Kesey did not know who was behind the program when he took LSD; his first experience was, in the book’s telling, both a government-funded experiment and the beginning of a trajectory the agency had not intended.

From research subjects to the Acid Tests

Kesey called the turnabout “the revolt of the guinea pigs.” He and the Merry Pranksters organized a series of Acid Tests in which thousands of young people in the Bay Area were given LSD. The events were not simply Kesey’s response to having been studied: he sought to spread the drug widely and loudly, using the Acid Tests in an effort to change a generation’s mind. The phrase thus marks a shift from being acted upon by an experiment to making psychedelic experience a public, collective undertaking.

Historical significance

The book presents the episode as one of psychedelic history’s richer ironies: the Central Intelligence Agency’s effort to investigate LSD’s potential as a weapon helped expose Kesey to a drug he would later promote. It suggests, with qualification, that Kesey and the Merry Pranksters helped shape the new zeitgeist, and that the cultural upheaval associated with the 1960s could be understood as beginning with a CIA mind-control experiment gone awry. “The revolt” captures that reversal without making Kesey the sole cause: the wider cultural shift was likely to have happened even without him, though he became its most notorious psychedelic advocate.