 Suppose further that the putative dog is actually a robot dog so perfect that it could not be distinguished from an actual dog by vision alone. James does not know that such robot dogs exist; a Japanese toy manufacturer has only recently developed them, and what James sees is a prototype that is used for testing the public’s response. Given these assumptions, (d) is of course false. But suppose further that just a few feet away from the robot dog, there is a real dog, concealed from James’s view. Given this further assumption, James’s belief in (d) is true. And since this belief is based on ordinary perceptual processes, most epistemologists will agree that it is justified. But as in Gettier’s cases, James’s belief appears to be true only as a matter of luck, in a way inconsistent with knowledge. So once again, what we have before us is a justified true belief that isn’t  knowledge.[13]  Arguably, this belief is directly justified by a visual experience; it is not inferred from any falsehood. If so, then the JTB account, even if supplemented with (iv), gives us the wrong result that James knows (d).