I like your way of always using analogies and everyday examples to talk about deep themes in your posts, @tarazkp. The brain is a complex organ that needs to exercise continuously, like any muscle we need to develop. It is said that even if not challenged, it can atrophy. The danger lies in staying in a familiar and familiar stadium, easy. I imagine that part of the political discourses, for example, play with this theory: they give the people what they want to hear and in the easiest way, something they don't think much about. Nice Sunday