This is a little off topic, but I'd like to respond to a couple of the comments.
Ms. Gladu said 88% of Canadian don't use cannabis. That's 88% in the last year. At some time during their lives, 45.5% of Canadians have used it at some time in their lifetime. To say this only affects 12% of Canadians is incorrect.
In regard to Mr. Van Kesteren's comments, I will very quickly say two things.
First of all, there was an oblique reference to marijuana, I believe. This word was not used, but indicating it would be a gateway drug to harder things. This is from my previous career. The definitive textbooks in toxicology, the ones used for fellowship training in toxicology, are Ellenhorn's Medical Toxicology and Goldfrank's Toxicologic Emergencies. Both are clear from an extensive review of the literature, the gateway effect of marijuana does not exist. It has never been scientifically validated. It's an assumption that no evidence has ever actually validated.
If we're going to talk history, we don't have to go as far back as China with opium, we have to go back a mere century to the United States in the law and order catastrophe that was alcohol Prohibition.