A necessary feature of understanding – or so it would seem – is that one grasps how various propositions within a common domain hang together. Newton provided us with a unied understanding of the motion of the planets, the ebb and †ow of the tides, and the antics of cannonballs, apples, and other terrestrial objects. A good sleuth spins together disparate clues about a suspect’s motives, means, and opportunity to understand how a crime unfolded. A doctor triangulates between a battery of tests and a variety of symptoms to understand her patient’s maladies.