Marijuana and ADHD. Paradoxial effect?

You can think better because marijuana has been shown to increase creativity and deep mental thinking, so it allows you to get more insight on math problems and other school problems. Stimulants work oppositely in ADHD patients and calm them down and give them the mental clarity to slow down and think things over, so maybe you didnt even have ADHD and the medicine was making your thinking worse. And if you dont live in California you cant find it because its still illegal in other states, and if you live in California i have no idea why you cant maybe there is a long verification process to do that kind of thing, i mean its still a controlled substance as far as i know.