I'm of two minds about this. On one hand, brain scans seem to show that development of the frontal lobe (planning, foresight, organization) continues through th

I'm of two minds about this. On one hand, brain scans seem to show that development of the frontal lobe (planning, foresight, organization) continues through the mid-20s, especially in males. On the other, people throughout history seem to have been perfectly capable of handling themselves by their late teen years. Are our brains developing more slowly now? Is our world now so complex that it takes a fully-developed brain to make sense of it? Or are we just big whiners?