  It is not clear how these conditions can be satisfied. In order to recollect Simmias upon seeing his picture, (1) I must have known Simmias beforehand and (2) I must be somehow cognizant of the picture and of Simmias. (3) And were Simmias and his picture not the objects of different knowledge, that is, were they the object of the same knowledge, it seems that I would not realize that they are different objects. The picture would not remind me of Simmias, it would just be thought of as a picture (or as Simmias). But, recognizing the picture cannot involve recognizing Simmias, lest we already be thinking of Simmias (y) in thinking about the picture (x): that is, we cannot be reminded of what we are occurrently thinking about. There must then be a way of cognizing the picture apart from what it is a picture of. Condition 3 is more transparent when we consider recollection from unlikes: we can recognize a lyre as a lyre or as a musical instrument, a piece of wood with strings, etc., easily enough without introducing Simmias in order to think about it. Condition 4 then spells out the peculiar way in which recollection from likes occurs; e.g., we realize that a picture or image is different from what it is a picture of: images fall short or are lacking in some respect with regard to what they are an image of. We recognize this perhaps because we recognize that it is an image and that images always are deficient with respect to what they are images of. But we need not be thinking of the very thing the image is an image of in order to recognize these facts.