What I mean is, in order for society to function optimally, you need a leader for each functioning unit within society. It is impossible for a single person to be the most qualified expert for even two of these roles, let alone all of them. The best you can manage is a jack of all trades. But a jack of all trades is a master of none. This truth can be demonstrated by observing the existence of advisors. No leader has ever been successful without the aid of advisors. In fact, there is a direct correlation between the quality of a leader and the cohesiveness of the advisors. The simple truth is that the best person for such a role is one who has no leadership skills. In fact, what they do need in vast excess is analytical skills. But the point is moot because their role is that of an unnecessary middle man. If you have experts leading each functioning unit within society, there is no need for them to even communicate with each other. Their jobs are that unrelated.