Hi There,   Do not be afraid of this cannabis psychosis.   The same thing happened to me when I was 17 years old.   I had a 2 day trip, which was one long, constant Deja Vu.   I felt as though my entire life was pre-scripted... it was hell. Literally.   I have spent many decades living in the shadow of this experience and when I was in my thirties developed Manic Depression.   Sometimes if I am tired, I 2click" back into this state... and interestingly, the awful physical (mechanicla grinding feeling) that accompanied the original trip (due to the cannabis' affect on my nervous system I assume), comes back.   Clearly, the link between the memory and mental thoughts I experienced at the time if the psychosis, created a very strong link / conneciton with the  physical feelings.   Now, I have to use simple logic to convice myself that it was only a nasty reaction to this trip.   Pre-determined actions / thoughts on a micro-level (ie from second to second), is ridiculous. It is pointless. Totally !   No God would do this to everyone.. and why do people not experience this feeling all the time ? Maybe, the canabis allows us to "tap in" to what is REALLY happening  ?   No. Again, ridiculous. Cannabis muddles the thoughts, sedates the feelings. If it were a stimulant... then maybe. Maybe !   The simplest explanation - which is usually corect (!) - is that the cannabis has messed with your brain. You only have to read about all the symptoms people have described as a result of taking drugs... especially mind altering drugs.   The simple explanation is: cannabis scrambles your brain. End of.   I promise you, you are NOT receiving an "insight" as to "reality". Reality is as it appears witohut the aid of drugs !   I am just glad, I am not the only one to have experienced stuff like this. For twenty five years, I thought I was.   Now, it makes things easier. If others experience the same things on cannabis... that explains it !