The following passage from "Of the Standard of Taste" by David Hume was used as a control to measure the accuracy and learning capacity of DragonDictate [Ref. 17: p. 210]:
The great resemblance between mental and bodily taste will easily teach us to apply this story. Though it be certain, that beauty and deformity, more than sweet and bitter, are not qualities in objects, but belong entirely to the sentiment, internal or external; it must be allowed, that there are certain qualities in objects, which are fitted by nature to produce those particular feelings. Now as these qualities may be found in a small degree, or may be mixed and confounded with each other, it often happens that the taste is not affected with such minute qualities, or is not able to distinguish all the particular flavours, amidst the disorder in which they are presented. Where the organs are so fine, as to allow nothing to escape them; and at the same time so exact, as to perceive every ingredient in the composition: This we call delicacy of taste, whether we employ these terms in the literal or metaphorical sense. Here then the general rules of beauty are of use, being drawn from established models, and from the observation of what pleases or displeases, when presented singly and in a high degree: And if the same qualities, in a continued composition, and in a smaller degree, affect not the organs with a sensible delight or uneasiness, we exclude the person from all pretensions to this delicacy. To produce these general rules or avowed patterns of composition, is like finding the key with the leathern thong; which justified the verdict of Sancho's kinsmen, and confounded those pretended judges who had condemned them. Though the hogshead had never been emptied, the taste of the one was still equally delicate, and that of the other equally dull and languid: But it would have been more difficult to have proved the superiority of the former, to the conviction of every bye-stander....