Why are tech bros embracing Psychedelics?

Are psychedelics the next big thing? Psychedelics include the drugs LSD, magic mushrooms, peyote, and often ketamine and MDMA too, among others. And some of these drugs have a history of spiritual practice spanning millennia. Then many of these drugs became synonymous with hippies and 60s and 70s counterculture. But now, psychedelics have new cheerleaders: tech bros and CEOs. So why the rebrand?…