4. Our behaviour is mostly automatic

even though we think we are controlling it. The fact that we can operate a vehicle at 60 mph on the highway while lost in thought shows just how much behaviour the brain can take care of on its own. Addiction is possible because so much of what we do is already automatic, including directing our goals and desires. In utilization behaviour, people might grab and start using a comb presented to them without having any idea why they are doing it. In impulsivity, people act even though they know they shouldn't.