Renaissance man'. The sheer volume of knowlege/data has long since made that impossible. Colleges and departments within university have with some consistency trended towards greater autonomy and less interconnection (certainly within the administrative realms) - no longer do we have 'science', but rather sciences.
This trend should cause folks a fair amount of anxiety when you consider the implications in terms of leadership that this enormous fracturing of knowlege imposes. It's hard to devise intelligent rules or direction when one individual's capacity to comprehend the totality of how it alll 'fits together' diminshes daily.
This idea alone is probably worth its own thread. In fact I think it just became one.
I once heard a scientist at a local pharmaceutical company complaining that their bosses had bachelors or masters degrees in business and were 'calling the shots', whereas they held PhD's in various disciplines and therefore those 'dummies' in management should have no right to order them around.