How much of our tax dollars was spent researching this?
(Because it's all BS) Humans are not spiders, and web building in spiders is an instinct, not a cognitive function. Why use spiders when there are already exhaustive studies of the effects of marijuana in humans?
Eventually, for the heavy pot smoker, the 'high' that they receive from the drug will gradually diminish. This is where studies have shown that the user will attempt to either find more potent marijuana to smoke, or just move onto stronger more dangerous drugs like cocaine, or even heroin.
Sounds like a quote from a 1950's educational film, like the ones I had to watch in Jr. High School.