I agree with everyone who says the good outweighs the bad when it comes to MJ. Personally, I have noticed that my word recall has sucked lately. I have trouble thinking of words sometimes, like that feeling where the word is on the tip of your tongue and you just can't say it. It's probably from smoking weed, but it could also be unrelated somehow. I think cannabis is a miracle herb and I definitely don't think it causes much harm.