"ultra-potent weed" is weak and you need to stop with that talking point. SWIM are on 90%+ THC cartridges or concentrates 24/7. Smoking the strongest weed, low 30%s, is a tolerance break thing or for fun.
A lot of things can mess you up after only one time. For example, I got hit by a truck in July of last year :) all my injuries have healed but I still have protective reflexes and some really strong emotions about it. Trauma is powerful!
