Agree! We forget that to live broadly is human. Arguments linked exclusively to success are not thoughtful enough -- and neither are they actually accurate about enabling success. The specialization model came about from industrialization. Nowadays, "specialists" in third-world countries struggle to make do, while people with breadth and creativity design the products of the future. Let us not forget that cashiers, too, are specialists. Does it follow that they are living their potential to the fullest? Clearly no. And only with breadth, does one even begin to have a sense of what is good for oneself and society at large. Of course, that does not excuse one from the need to pursue excellence as well. But there are synergies with breadth.