Marihuana deranges your mind programming from childhood. If you smoke some good Marihuana, you stop taking seriously everything that you were programmed about. In other words, all your knowledge becomes subjected to irony, sarcasm and therefore satire. Your brain starts questioning yourself and others. At the end, your brain is like after a session of a washing machine, completely clean like in your childhood. Unfortunately it works only with people who have high IQ and are able of analytical and critical think. In case you are not particularly intelligent, Marihuana will have the same effect of alcohol.