hmmm laced mushrooms could very well be why there is more potential for having a bad trip...but as you said..SWIY always grew their mushrooms..or went out and found them...that shows intent and work at making the trip happen...once they make the decision to trip..SWIY either had to grow their mushrooms or go pick them...more time to prepare you mind and body for the trip..and you arent going out and buying them from some dude trying to make a buck off a very special thing..

there is another idea...perhaps it has to do with the whole buy and selling thing...perhaps it puts a dark cloud on the material...