Sorry for bumping this topic, but I don't agree with you. Dude a friend of mine smokes weed from 14th years, and he isn't getting smarter. He is 32 and works as a food runner. He lives from a paycheck to another. I asked him to come to study Programming with me, and he refused, I asked him to invest in BTC with me, I've got rejected. There is no way back for him, and he isn't getting smarter. You can increase your IQ only if you want to know something new, but when you are high, you can't even read properly a book. He got a chance this year to get a good job, and to be paid well, but he refused to pass the drug test.
Maybe you should help him with that. There are different ways to pass the drug test, like fake urine. Maybe, if he will pass the drug test, he is going to have a new life. I've been in the same situation, and I have bought a synthetic urine kit from
noonproposition56.com, and it worked. This thing has saved me, because I have passed the drug test and got a new job. But make sure to buy the most qualitative urine test, or it may not work.