Early in Thomas Hardy's first novel, Desperate Remedies (1871), an architect in training meets a young woman by accident. Love at first sight turns out to involve a conundrum, notorious in the history of philosophy, about drawing predictions from serial events: will the sun rise tomorrow? Between Edward Springrove and Cytherea Graye appears "one of those unaccountable sensations which carry home to the heart. .. by something stronger than mathematical proof, the conviction, 'A tie has begun to unite us' " (Hardy [1871] 2003, 32). Yet on parting, Edward is left with "a hopeless sense of loss akin to that which Adam is said by logicians to have felt when he first saw the sun set, and thought, in his inexperience, that it would return no more" (33). Hardy sketches two modes of judgment under uncertainty here, corresponding to the poles of what I call "serial thinking," an approach to representation and cognition that emphasizes repetition, enumeration, and aggregation. 1 The first mode blurs the discrete boundaries of numbers and subjects to register an "unaccountable" emotional link. The second, formulated in the negative, marks the clear separation between what the novel sees as a single or "cardinal event" (10) and the (hoped-for) emergence of an ordinal pattern. One mode is affective, tactile, inchoate; the second rational, numerical, predictive. The argument that follows turns on the difference between these modes, their connections to problems of generic classification, and the shared claims of novelists and "logicians" to their exposition.