 For experiences to be capable of such enrichment, they must be able to incorporate intelligent appraisals, just as desires and actions do. To the extent that such incorporation is attentive to the features of the object along with their import, so as to produce a unified, free, emotionally engaged, satisfying, appreciative experience of the object, the experience realizes aesthetic value (AE 42–3, 47). Such appreciative perception of the object incorporates knowledge of causes and effects.  “[T]here enter[s] into the [epicure’s] taste, as directly experienced, qualities that depend upon reference to its source and its manner of production in connection with criteria of excellence” (AE 55).  The listener informed by music theory learns to hear, and thereby take pleasure in, different types of modulation from one key to another, and is thereby primed for certain musical expectations, creating alternating tensions, fulfillments, and surprises as the musical performance unfolds. Similar claims can be made for all of the arts, whether they be “fine” or “practical.”