A few years ago, researchers at Cornell made a remarkable discovery: When unsuspecting diners were given self-refilling bowls, they consumed almost twice as much soup as those with normal bowls. In other words, it was the quantity in the bowl that determined how much they ate, not their appetite. Continue reading...
I would tend to agree with that assessment. Personally, I'm not a smoker, but from my observations, it appears that in addition to the availability of cigarettes, the determination to smoke or not seems to have at least a physical addiction component (Nicotine), a usual routine (gotta start the morning), and a social component (smoke break time) to it. Changing the number of cigarettes in a pack won't address these other issues, therefore I suspect it would fail to do anything besides collect additional revenue.
