Telling people that it's unhealthy to smoke, showing them ads of smokers talking through a hole in their neck or putting scary warning labels on packs of cigarettes doesn't seem to make a discernible difference in anyone's willingness to light up on a regular basis. The only way to really get people to stop smoking is to raise the price to $50 per pack and to have a case of dynamite explode in their ass every time they light up.