Okay, that is entirely fictional. I personally do not feel that Cannabis causes in sort of mental-instability or dysfunction, but that under the influence of a subtle, yet powerful psychedelic, which marijuana is, you are capable of coercing your mind to believe anything - even that you are mentally insane. The side-effects of depersonalization and derealization accumulated with that, and likely used by the user as evidence of his own slipping mental-state, do not help either.

Here is an older, but contradictory article:
www.cmcr.ucsd.edu/geninfo/Reuters_062703.pdf

And the part about the brain having a part of it, used solely to keep out inappropriate thoughts and behaviour, and the fact that pot inhibits its function - well, I'd call that "mind-expanding" and obviously a side-effect of "mind-manifesting," or psychedelic drug.
ThePeacockNamethTom Reviewed by ThePeacockNamethTom on . Article on the effects of THC vs. CBD Check out this latest barnacle - christ it was only yesterday they were banging on about how smoking cannabis gives you emphysemia by the time your 35 or something... They finally found evidence that cannabis rots your brain! BBC NEWS | Health | Cannabis 'disrupts brain centre' "They then recorded reduced activity in an area of the brain which keeps inappropriate thoughts at bay." What you mean a part of our brain is there to STOP us from thinking? Rating: 5