You have asked a wonderful question, bignatslover.
In 1966 I attended a lecture by Timothy Leary. I think he was still teaching psychology at Harvard, or he had just left.
He was attempting to articulate a philosophy of psychoactive drugs, a project he soon abandoned. But while he was working on it, he struck a rough formulation that: Normal consciousness=0; being **92** =-1; smoking ganja=+1; psilocybin or DMT=+2; LSD=+3.
I've always been more an empiracist than a theoretician, so I went back to my dorm, knocked back about six ounces of Jack Daniels black label, rolled and smoked 3 or 4 joints, and concluded that Leary's formula was not accurate, because wherever I was, it was not flat zero.