That doesn't apply in this case, because the causation is well documented. The developing brain can suffer various types of delays when thc or just about any other intoxicant is distracting said developing brain's ability to actually develop.
Problems occur when the brain is too preoccupied in La La Land to develop optimally for the real world. There's a huge difference between the "thinker" and the "space cadet" when it comes to how one's brain handles thc in their youth.
Space cadets tend to stay space cadets. Thinkers tend to stay thinkers. The space cadet is who the Surgeon General is concerned about, because thc pretty much obliterates their chances of getting out of La La Land mentality.
Nobody says pot stops the brain from developing. You're going to get a notable Bell Curve. Some potheads go total 70's/80's movie revival mode. Others become Carl Sagan. Almost everyone around these people can identify which one is the Carl Sagan and which is the Tommy Chong (character) pretty early on. That's half of the pot humour in those movies, so it's not like only non-users notice this.
Funny point: I do think that we have a better ratio of Carl Sagans/Tommy Chong in the universe of pot smokers than in the non-smokers universe. Maybe the tommy chongs that don't smoke are a little bit smarter, but they probably are more sad/depressed.
That's actually why I suggested Tommy Chong's character. In real life, he's a smart guy - which you can tell when he's interviewing, versus when he is in character.
He definitely understands the dichotomy, and as an ironic twist, has become one of the most successful professional potheads in the world. He's a thinker who is very good at emulating the opposite side of the Bell Curve.
Problems occur when the brain is too preoccupied in La La Land to develop optimally for the real world. There's a huge difference between the "thinker" and the "space cadet" when it comes to how one's brain handles thc in their youth.
Space cadets tend to stay space cadets. Thinkers tend to stay thinkers. The space cadet is who the Surgeon General is concerned about, because thc pretty much obliterates their chances of getting out of La La Land mentality.
Nobody says pot stops the brain from developing. You're going to get a notable Bell Curve. Some potheads go total 70's/80's movie revival mode. Others become Carl Sagan. Almost everyone around these people can identify which one is the Carl Sagan and which is the Tommy Chong (character) pretty early on. That's half of the pot humour in those movies, so it's not like only non-users notice this.