The Importance of Habituation

I think there is an element of habituation to lots of things we do in terms of the euphoria that goes with it. But they don't all build up a tolerance that you keep having to take until you die, right? I think it's a good point and this does sort of distinguish a drug you ingest directly that the physical tolerance. That's a piece of it for instance that really does need medical treatment. When you have physical tolerance for a drug, you can't just stop taking it. So that aspect of addiction, but I think that's very... You can pull that apart from the physical dependence can be pulled apart from the sort of cognitive psychological and brain addiction.