Most philosophers and perceptual psychologists now concur with Armstrong’s (1960) assessment that the “single point” argument for claim (a)—“distance being a line directed end-wise to the eye, it projects only one point in the fund of the eye, which point remains invariably the same, whether the distance be longer or shorter” (Berkeley 1709: §2)—conflates spatial properties of the retinal image with those of the objects of sight (also see Condillac 1746/2001: 102; Abbott 1864: chap. 1). In contrast with claim (a), we should note, both contemporary “ecological” and information-processing approaches in vision science assume that the spatial representational contents of visual experience are robustly three-dimensional: vision is no less a distance sense than touch.