Yes I have used that statement a few times......all in the same context. That would be when people try to generalise too much in order to make it look like their point is beyond dispute. Why would you post a link that is clearly inconclusive at best.....especially when you say you could back your original post up if necessary? If you post a link that does not say what you say it does then you shouldn't be too suprised if somebody makes a 'typical response' of that does not prove anything.
This comment makes no sense:
"Herb has no negative effect on the brain, only if one's dumbass self lets it. "
Are you suggesting that you can conciously decide whether a chemical can affect your brain or not? Or are you saying that if you go over the top with your usage, it will affect your brain? Or what?