From my post: "Marijuana contains more carcinogenic hydrocarbons than tobacco smoke and because marijuana smokers usually inhale deeper and hold the smoke in their lungs longer than tobacco smokers, their lungs are exposed to those carcinogenic properties longer." You also said: " . . . a typical marijuana smoker may smoke a total of one or two marijuana cigarettes per week".
Must be nice to be an expert on what the "typical marijuana smoker smokes in a week. Of those who I know that "typically" smoke marijuana one or two per week would be an extremely slow week. So, where do you get your "facts" on the "typical" amount that marijuana smokers use in any given week? I seriously question your claim.
I'm well-aware of what was contained in your post. But cigarette smokers also inhale smoke into their lungs deeply, and since the average number of cigarettes smoked by a typical cigarette smokers dwarfs the average number of marijuana cigarettes smoked by a typical marijuana smoker, the amount of cigarette smoke deeply inhaled, over time, and the length that cigarette smoke remains in a cigarette smoker's lungs---cumulatively---is in the stratosphere compared to that of an average marijuana smoker. You simply can't compare the two types of smoking habits in the same way, because cigarette smokers use their product for different reasons than marijuana smokers use their product. For example, "chain smoking" cigarettes is quite common. Chain smoking marijuana cigarettes is quite uncommon, as it is a distinct waste of marijuana.
You also said: " . . . a typical marijuana smoker may smoke a total of one or two marijuana cigarettes per week". Must be nice to be an expert on what the "typical marijuana smoker smokes in a week. Of those who I know that "typically" smoke marijuana one or two per week would be an extremely slow week. So, where do you get your "facts" on the "typical" amount that marijuana smokers use in any given week? I seriously question your claim.
The only time it's nice to be an expert on the habits of a typical marijuana smoker is when a chucklehead like you, who obviously knows very little about the subject, puts forth in a public forum like an expert on it. Because then I am in a perfect position to hand said chucklehead his hat. As one of the few FReepers willing to admit he smokes grass, with a long history of doing so, when it comes to this subject, I do have expert standing. Sorry.