You should know this. My brother starting smoking weed at 15.
He was much brighter than I, and yet always seemed to thrash around.
Got an undesirable discharge, later upgraded to a general, from the Army, because of drug use.
Apprenticed as a machinist, for a while, constantly toking.
Moved to Florida, finally went on SS substance abuse disability, and died of a cardiac arrest at 44.
He's in the Florida National Veteran's cemetery.
Did MJ kill him? Hellifino. It surely had an impact. To me, tokers are a waste of O2.