I thought I was the only one that knew about that study. I use it often when arguing that the word 'addiction' is biased and we should just use 'habit'. Addiction makes it seem it's the substance's fault, that it has something that makes people addicted to it, when in fact it is people that sometimes have a predisposition to forming habits when taking certain substances.

Crazy people can't buy guns, but guns aren't illegal for everyone. It should be the same for drugs, at least. If you have this predisposition to habit forming around drugs then you can't have them, but most of us don't.