I think its just it takes a while to move up the stoner ladder, first you only take a little bit and notice the difference, then you smoke a little more, then a little more, after a while you smoke like an ounce a week. but it still just takes a little bit to get you high. I've been smoking for just about 2 months straight and i can still get high off of about 1/2-1 bowl of regular weed. I just get high alot more often.