ABSTRACT
Note: I offer here a conceit, an extended comparison. Presumably, such analogies have earned this name because there is a certain arrogance to playing things out at such length. Conceits are conceited. So, in advance, forgive me, but I find the differences between Mitford and Thirlwall, two classical historians, to be a wonderful analogue to the differences between the logic of the material and the logic of the exchange. Their differences are profound and the light they provide valuable.
