Deleuze placed his hopes on the contingency of the encounter, by which thinking is forcibly drawn out. In fact, there is something irreducibly paradoxical about the encounter understood as contingency. Instinctively, the word ‘necessity’ brings with it an inexorable sense of universality, whereas the word ‘contingency’ basks in particularity. For this reason, a philosophy which privileges contingency would seem in the same stroke to be one which values the singular above all. After all, each contingent encounter can only take place in a singular and particular circumstance. And yet, the very conception itself, according to which the contingent encounter is what calls forth thinking, is one which can be applied anytime anywhere, irrespective of the specific circumstance. Whether this conception is universally valid or not, at the very least it is one which possesses a general sphere of applicability. And to that extent, it can be said to be abstract....