But does that mean that people who smoke pot will ingest more thc, or does it simply mean that they will smoke less to get the desired effect? If someone goes out to a bar and asks for a beer, and the barkeep says "Sorry, the tap's broken, would you like something else?" he's not going to say "Okay, give me a mug of bourbon".
While the University of Mississippi may be getting their weed out of roadside ditches, I can't say for sure. I can say for sure that I knew three extremely regular users in the early 1970s who were unable to finish a single "pinner" (very thin joint) between them of some marijuana available then. Its pedigree was known, it was not laced or adulterated. I know of another fella, renowned in my school days as the quintessential "overindulger", who always used twice as many intoxicants as his friends, who stopped smoking some hashish after seven "tokes" - because he was getting way too high. This also was in the early seventies.
The "potency" MYTH is a justification for the ludicrous, un-Constitutional, civil-liberties-destroying, STUPID War on Some Drugs. Its premise is utterly flawed, its results horrendous and its continuation lunacy. The LP is right.
And before one of our resident Warriors stoops to the slur, yes I am a drug user - tobacco, tea and coffee, along with the occasional recreational aspirin. Tylenol and Ibuprofen are too "hard" for my taste.