News Desk: The Velluvial Matrix : The New Yorker
This essay explains, in far better terms than I could construct, the pitfall that knowledge-merchants such as myself fall into. When looking at a problem, it's easy to focus on little issues and completely miss the big picture.
Increasingly, problem solving in all areas of life (not merely medicine) will involve much more of a systems-oriented approach. I see this in computing --- and the misapplication of computing tools --- all the time.