 Hempel acknowledges that an explanation for why the paradoxical cases appear to be non-confirmatory may have something to do with fashioning hypotheses about classes that are affected by their relative size. Since the class of non-ravens is so much larger than the class of ravens, where what we are interested in, by hypothesis, is the color of ravens, instances of non-black non-ravens might count as confirmatory but to a lesser degree than instances of black ravens. He allows the possibility that perhaps the theory of confirmation should proceed quantitatively, which might provide a less perplexing basis for assessments of this kind. But he steadfastly maintains that the consequences he identified following from the application of the principles he employed are logically impeccable, no matter how psychologically surprising they may seem (Hempel 1960).