The demand for concreteness is radical and thus potentially fruitful insofar as it promises to effectively circumvent the ultimate consequences of indifference, that is, of nothingness experienced subjectively through a consistent and, as it were, successful drive toward the abstract. The abomination of abstraction, conceptually congealed in nihilism, for example, cannot be avoided by its own means, but rather in the most direct contact with that suffering that our quotidian labors unearth in every single act. The horror is palpable precisely in our most innocent connivings. The difficulty with abstraction is, therefore, not in its results, but in what it prevents from surfacing here and now. This is akin to the opportunity cost so dear to the economists. Although the demand for concreteness is itself safely lodged in the conceptual realm, the very notion of nonidentity, that is, of the inadequacy and simultaneous necessity of the concept, already points beyond this realm, and thus hopefully away from the deadly safety of mental gymnastics. This is, perhaps, the only moment of abstraction that is salvageable in spite of itself. The rest depends on the degree of passion contained in the outcry against the rigors of indifference, including our own.