The experiment that came before the bicycle ride
In 1943, chemist Albert Hofmann was working with lysergic acid diethylamide, or LSD, a compound he had first made several years earlier while investigating substances derived from ergot, a fungus that grows on grain. He deliberately took a measured amount to find out what the compound did. The effects began while he was at work and became strong enough that he decided to go home.
At the time, wartime restrictions made car travel unavailable, so Hofmann and a laboratory assistant made the trip by bicycle. The ride became famous, but it was a consequence of the experiment, not the moment that revealed LSD to him.
Why the ride became part of the story
LSD can alter perception and thought: familiar surroundings may seem distorted, and ordinary sensations can feel unusually intense. Those changes made the journey home an arresting episode to recount. But the central scientific step was more deliberate and less cinematic: Hofmann had taken a known dose and observed its effects.
That distinction matters because the bicycle story can make the discovery sound accidental, as if the drug’s effects first appeared during an unexpected trip. Instead, the ride was the vivid aftermath of a planned self-experiment. It gave the episode its memorable image—a chemist pedaling through a world changed by a substance he had chosen to test.
