Pure Interdependence?

Doug Glanville:

A baseball defense is a collection of individuals with skill sets suited for the job at hand: the shortstop needs range and a good arm, the center fielder needs speed and an understanding of ballistics, the catcher need to be iron-tough and cerebral.

Or so it always was. The third baseman never had to understand how to turn a double play at second, for instance. But the shifting has made us focus on the highest goal of defense: to be a living, breathing single organism, to work in concert with pure interdependence. If you have a weakness, it can be masked much more readily. It is a shared burden.

or,
Why Defensive Positioning Matters
(and What We Can Learn From Our Ballplayers Today...)