From a personal standpoint I can honestly say that I am far more competent at what I do now then when I was younger. That's not to say that younger people aren't as capable, it's just that through many years of working in different market sectors and with diverse companies and groups of people, the breadth of understanding that it imparts truly helps to fine tune one's business acumen, something that is hard to replicate if one is just out of university or college.