Study Questions Marijuana As Gateway Drug

Much has been made of this study and, frankly, I don't get it.

I'm no defender of the gateway theory, but this feels like a straw man. First of all, all of the kids in the study were underage. Were gateway advocates arguing that underage tobacco and alcohol use were not troubling?

I guess it does make the case that marijuana deserves no special status over alcohol and tobacco as a danger to kids.