[a3n]

> Every three days Nathan (not his real name), a 27-year-old venture capitalist in San Francisco, ingests 15 micrograms of lysergic acid diethylamide (commonly known as LSD or acid).

> Nathan first started microdosing in 2014, when he was working for a startup in Silicon Valley. He would cut up a tab of LSD into small slices and place one of these on his tongue each time he dropped.

How does he know?

How does he know it's actually LSD, or only LSD?

How does he know how much is in a tab?

How does he know whether it's evenly distributed across the tab, and that one microdose is actually 15 micrograms of LSD?