From the teonánacatl and peyote of the native americans, which would make them run around and be possesed by demons, and commit "unfathamable" acts of depravity, to the murderous rampages and suicidal tendencies of reefer madness. Now replaced by precipitation of early schizophrenia, funding to terrorism (akin to the jazz playin, coke snortin', bullet resistant blackies of the olden days), and loosing interest in school and exams (zombified). They'll just come up with more and more extennuating circumstances, that a few, out of billions that smoke, can be a testament too. As long as I can get through the next 50/60 years without any1 taking a dislike to the the smell of my smoke, I'll be content.