Drugs (relevant to micro dosing)
I will say when I was in school for engineering, I would microdose acid during tests. Probably about 30ugs a time. Made visualizing math a helluva lot easier, I'd go from being a C student to an A student, I was way better at math on acid than sober. If I went back to school I probably wouldn't do it again because acid and schizophrenia don't really mix well (shrooms were a different story but that's besides the point) but I see what the techbros were saying. Was like I could have multiple pages of notes stored in my brain and flip through them casually.
This is why when I was dealing people would trust my math when I was off multiple tabs. For some reason I was just really good at mental math when I was on acid. Wouldn't trust myself to do anything else on acid, but math was a strong point.