 However, Condillac had no right to simply-side step the metaphysical question of the nature of body. His account of how touch instructs the eyes to see figures and locations describes the hands as extended objects that move through space and touch various parts of the extended surfaces of the eyes (Treatise III.iii.1–9). One cannot remain agnostic about whether spatially extended objects really exist if one’s theory of perception presupposes that one’s sense organs are themselves extended and mobile.