There are many reasons to peek/plateau either through health, age, resources (finances) or from people that limit the progress of others. Mazloes theory of self actualization is not readily achieved by all. But man seems to baffle always in perseverance to accomplish. If not we all would be living in caves. The video gave food for thought enough for eight pages of comments. Maybe that's what it meant to invoke. And then maybe a break through in tech is coming forth? The best to all.