Earlier quoted context omitted.
My preferred way to wade through a political research topic like this is to look at the aviation industry. If a pilot can not use a medical substance, then it is very likely that there is some thing there. Pilots are generally fairly high investment, and they are also fairly international in research and standards. All nations with an airforce tend also be interested in such research, regardless of current political…
I think you miss the point of the comment you replied to. > The law's assumption that this level of THC is evidence of impairment seems to be invalid. I think most will recognize that THC causes impairment. The question that (AFAIK) is unanswered is if it can be measured simply by looking at the concentration of THC in the blood. In fact, if you look into the mechanisms for alcohol tolerance vs THC tolerance. What yo…
Alcohol tolerance might even be a positive here, since a drinker can drink a glass of beer 24hrs before a flight and be fairly certain that the ethanol has been broken down, regardless of tolerance. If THC metabolize slower as the body builds tolerance, then the impairment may continue for a longer time at a lower intensity even for a small dose, increasing the period of uncertainty.