In a 1994 Playboy interview, Bill Gates coyly addressed past experimentation with LSD, deflecting specifics with lines such as 'my errant youth ended a long time ago' and, to one acid anecdote, 'that was on the other side of that boundary' — while quipping that he 'never missed a day of work.' Gates was more explicit decades later in his 2025 memoir 'Source Code,' acknowledging he had taken the psychedelic more than once as a young man and joking with Steve Jobs about it. The disclosures are a reminder that, like several pioneers of the personal-computer era, Gates dabbled in the counterculture of his youth.