 The argument relies on the indistinguishability of far and near perceptual experiences, considered as experiences, to argue that, since the far experience does not directly present the object’s surface and shape, the near experience also does not directly present that surface and shape. Price fortified the appeal to far and near experiences with the observation that experiences of the ball’s shape vary continuously with distance, which he found to tell against the claim that nearby experiences of the ball are direct while other experiences are mediated by sense  data.[18]  In addition, Price extended the argument to include cases of hallucination (1932: 28–29), which are explained by the having of sense data that are indistinguishable from veridical perception. Appealing to the phenomenal indistinguishability of various perceptual experiences provides support for sense data across all three cases: veridical perception, illusion, and hallucination.