Is your point that there are no heavy pot users who smoke three times a day? It seems very likely. I know some folks probably only smoke once a week, too. If the point is that the study is not correct because it had heavier than normal pot smokers, then doesn't it show, that just like alcohol abuse, the more you use in a day over the longer period, the worse it is for your brain?
I never understand why these types of studies are upsetting.
I never understand why these types of studies are upsetting. Probably because they're often used by drug warrior types to justify all the arresting, prosecuting, and jailing that goes along with the so-called War on Drugs, which puts marijuana in the same category as heroin or cocaine.