The term was coined by an anthropologist. Some believe it was the first religion. NOT. This belief system is inate in all humans and exists today among indigenous people.
Animism - The Belief that all Things have a spirit
The cultural influences of modern society will always interfere with the ability to live according within the natural spirit world.
The effect starts very much when you smoke it... Without alcohol or similar things like tablets etc...
Initial tests showed that many people respond to it.
Without the people who got it for testing knew what we were aiming for, namely the medical effect and without us knowing what diseases they had that tested it... People came to us and said... Hey I suffer from chronic pain, the other one reported adhd and that it helps him...
Of course, everyone reacts to gunja in their own way, but it's a start and it's a damn long way...
Shortly. 30 min. up to few hours. For the duration of the peak of the effect of Cannabis.
For some it was a unique Type of ‚crashout‘ and they didn’t have Problems with it beside. For others it was predictable with the use of cannabis.
For sure it‘s not the weed to blame in the first Place but it aswell can be a key-Element to a psychotic Event. It‘s absolutely not for everyone. It‘s a blessing to be able to use it on a Daily Basis 
I‘m only talking about immedate effects. People who‘ve been on psychosis and using weed on top are a whole different Story.
So not a real psychosis but more of a bad reaction to cannabis? it's not for everyone like any other drug or medicine
We are all different and I of course don't know what you witnessed but when I was young we used to smoke a lot of superpotent weed as we called it back then
We called it to flip out and it was like a fantasy that absolutely was self controlled if something dangerous happened or police came close we would snap out of it very fast 
as far as I understand a psychosis is something that remains after the effect is gone? If not than a large amount of the population have psychosis when they drink alcohol
There is not a lot of people trying ganja for the first time that hasn't heard negative or dangerous propaganda prior to using and some having strong fearful reactions or panic attacks because of this
Just like our food there is a lot of ploidy genetics and very likely genetically modified ones, not only the seedless crap but higher levels of it...
I'm gonna be open to that there can be (unhealthy ) effects from this unnatural genetics but that I don't know, it's just speculation
The reactions were Bad enough to get someone harmed. Absolutely psychotic to me. Reactions Like this - like on alcohol or drugs aswell can lead to a psychotic Episode. Prof. Grinspoon Said it in the Video above.
if your Buddy Starts Running after people in the night while screaming.. I can‘t even mention anything more without getting super Dirty.. pure psychiatry type stuff happend to that guy, and he mentioned earlier that he‘s had weird reactions to weed before. I regret it badly for believeing in weed is superior and risking it for this dude.
And no, he has never acted funny to me before. I even used to Trip psychedelics with him and time was allways Great. Until I had him Hit my Joint. Thought it‘s the end of Both of us 
Later my cousin had Similar sypmtomes, which didn‘t last that Long but extremely reminded me on that time before with my friend.
It could just aswell be related to synthetic grabage that they used to spray on blackmarket weed..
Anyway I believe that if you hold something back or pretend, weed can truely break that Image and let a whole lot of Reality Break out of you, even if it‘s in form of psychosis. It does affect multiple Parts of your brain and Body. Everybody is Build different. My Cousin after Never struggled with it again, while to that other guy I had to Break contact over it and I Hope he won‘t ever get Close to weed again.
Yes, when we observe cases like this we should always to take in consideration this question: was a pure of outdoor organic ?
Omg that sounds scary as fuck
I would also go far away from that
I'm not blind to ganja or any drug can make recurrence of psychosis or already underlying mental disease that can unlock a psychosis but as this thread was asking can using ganja lead to having psychosis like can ganja be the direct reason to make a healthy brain go psychotic, that I don't believe
And like you said he was experimenting with psychedelics prior to this situation
Yh well after whitnessing all this i believe one thing: If you clearly ask if ganja could be the reason of psychosis, I‘d say never!
But it indeed can be the key Element to it. And pretty reliably so 
That sounds like strassenhaze amnesia designer terp spray , did experience few such cases in germany, they had their stuff from the street, also funny how this strassenhaze is so similar all over here
Yh well this 
I won‘t know the real answer
You reminded me when I was an early teenager and I smoke with my friends we had one rule: do not smoke with those who cannot handle ganja.
Is true , some people becomes very stupid and annoying when they smoke 
So we need to make sure they don't ruin our time and more important they don't 
us to the teachers or the adults because those people was also prone to do that
I don't know how it looks but we had to exclude those people from the smoking sessions, was the only way and sometimes we even felt bad for excluding them
As soon I become enough old to be not anymore scared of other people for my smoking (excluding the police of course) I start to include those kind of people again because I was interested to experiment on them the reasons behind that attitude
I have run several experiments and I will say there are two main behaviors of people who cannot handle ganja:
1- they just fell asleep and they suffer like you may suffer on a boat with bad weather and big waves. They are inoffensive and after the experience most of times they don't want to repeat again. Some they will have ganja afterwards others they will just feel a bit ashamed. Most of them are alcoholic or heavy drugs users or very very sensitive to anything they intake like they drink a chamomile and they sleep 12 hours
2- they begun to do crazy things , run here and there, say offensive jokes, laughing in a way that is not nice to be around.. this are the most curios because I'm my opinion is not the ganja who makes them acting like that but the placebo effect of the idea they have the ganja will make them act. Placebo effect is very real but somehow you can perceive that is not exactly what is meant to happen..
As long as this plant and our endocannabinoid system is not fully researched its just all " bro science" always better to say it can .
Imo between us here, i think a deficit cb receptor in humans could cause or permanent anxious non stopping ever lasting high or they wont feel nothing , depending cb1 or cb2 receptor. This is a plausible theory as why some people might really experience bad trips imo ofc .
After all These years I was still considering the Same.. what if he was aware and just went for it bc of Placebo
It was absolutely insane tho. Category 2++
Maybe, but I never seen anybody mentally ruined by smoking ganja. I definetly have seen many people damaged forever by pharmaceutical psychotropic drugs sold by conventional doctors. And also I have seen a few with chemical drugs like amphetamines or LSD, cocaine and so on.. (still less compared with the official legal medicines)
That‘s super interesting to me (about the receptors) because my Dad for example Swears he can‘t smoke weed without having the worst Trip of his life (which I ever doubdet tho).
My Mother for example is afraid of weed, but when she tried it she won‘t feel much or nothing at all 
People having different set of receptors would explain all of this pretty well.
Haha stay away from them is a good idea
I had a friend like this but he absolutely always wanted to smoke and got amazingly annoying to everyone
Later in life he grew out of this effect and I agree with you I think it was the placebo effect of wrongfully thinking how it was gonna be or they hear bout the crazy effects one could have, expecting
I think the placebo effect must be taken in consideration too as something very relevant
After all the scary propaganda and the stigma perpetuated over a century now, is perfectly understandable why many people is so scared by the act of smoking or intake other ways THC ganja.
Consider that during medicinal trial for a new drug to be FDA approved to be commercialized the medicine has to be more efficient than the placebo. Anyway in many cases the placebo is equal or even more efficient.. so to be approved a medicine need to have at least a 51%* of rate of success compared to the placebo.. and during those trials the testing groups are not influenced by any external propaganda. The mind is very strong.
*Is not exactly like this, I simplified
The fun is that psychosis also works like that.. you keep believing in absurd thoughts. It‘s indeed a thin line that has to be explained biochemicaly
Yes