Weed isn't a performance enhancer at all to me. It makes me mega lazy. If you have a menial job where livesa aren't in your hands it's great for work though. Makes dealing with dickhead bosses and anyone else SO much easier.
I never thought of it like that. It does make me focus on weird things. For example, I was a little buzzed once, saw a commercial and was so happy about it, I started focusing on it. But then I didn't pay attention to other shit.
It might make you focus more, but what you're focusing on might not be what you need to focus on.
i like to do those online IQ tests every now and then just to see a general idea of where im at (cuz they're not as accurate as it being done professionally). after i started toking, my IQ on the quizzes jumped about 15 points so its definitely enhanced academic ability.