Just keep grasping at straws. True sign of someone trying to validate their excesses
Believe me. I lived through the 60s ...what I can remember of it. You’re better off with a few beers than that crap.
Sounds like a defense of principle to me. Anyhow, now that there are places like Colorado, longitudinal studies should be easy. And I’d bet the price of a doughnut factory that yes, they will show pot wreaking measurable harm if consumed in sufficient quantity. But that points up the difficulty of measuring something that is in the shadows. It is hard to do. Far easier to measure something that is in the sunlight.