Sure, hence my assertion that no drug is harmless. That being said, there are many flavors of what people will call "addicts" My friend Justin wasn't addicted to any one drug, he just got himself to a point where he couldn't deal with being sober, so he typically took whatever he could get his hands on. I'm not specifically bagging on marijuana either, I just think focusing solely on overdose as a metric of "danger" is myopic and dangerous in of itself.