"A fox knows many things, but a hedgehog one important thing." The Greek poet Archilochus
Phil Tetlock, a psychologist, suggests that the fox and hedgehog are examples of different cognitive styles and most MBAs seem to favor the hedgehog - she's considered more of the decisive visionary, while the fox is more nuanced.
This seems to reduce all of humanity to a binary distinction once again. Seems like a very hedgehog thing to do.