Let's put on our thinking caps and get ready for a lesson. Let's say about 40% of the population smokes weed, meanwhile the other 60% are getting in car wrecks and getting traffic violations and not being prosecuted with a DUI obviously. Now tell me this, of that 40% getting traffic violations and getting into wrecks, how does anyone know if that happened because they were high? There is something called a coincidence, how can any scientist calculate coincidence in a statistic that says "this" amount of people got into a wreck under the influence of weed? It's actually not possible. Its like saying, people under the influence of weed experienced more frequent Gjallahorn drops.