That refers more to individual behavior. What I mean is that, simply, if the world runs out of food, people will die until the population reaches a level that c

That refers more to individual behavior. What I mean is that, simply, if the world runs out of food, people will die until the population reaches a level that can be supported by the available resources. I don't see how any other outcome is possible. This happens on a smaller scale in areas where food distribution is problematic. The only way around this is advances in technology that improve food production/distribution, but if this were to occur, then population would no longer outstrip resources and a new balance would be reached.