It is sitting on the table in front of us, in ordinary light. The rest of us have no hesitation in recognising is as red. The disagreement is not subtle and requires neither instruments nor careful comparison. We simply look and respond. Now there are several things we might say. We might check the lighting, or ask about colour blindness, or suggest moving closer. What we do not usually say is that the person is perceiving a green tomato. We do not treat the situation as if two equally valid perceptual worlds had opened up side by side. We accept the object as stable and assume that one of us is mistaken.
Consider a different case. A figure is photographed mid‑stride, one foot lifted slightly off the ground. We say, quite readily, that the figure is “moving,” or that it “captures motion.” Or consider a film where bodies appear to walk, turn, speak. Here too we speak as if movement were present, even though nothing on the screen changes place in the ordinary sense.
It is tempting, at this point, to treat these situations differently. In the first, we say someone is wrong; in the second, we say that something like motion is genuinely perceived. A distinction begins to form between error and experience, between mistake and what is given.
But it is not clear that we need this distinction.
If we return to the tomato, the matter is straightforward because we refuse to let the language run ahead of the situation. The person says “green”; we look again; we correct. Nothing is gained by introducing a special category of “experienced greenness” detached from the object itself. We simply say: this is what is there, and that is not how it is.
Wittgenstein is helpful here, not because he settles the issue, but because he reminds us to look more carefully at how words are actually used. The difference between “it looks green” and “it is green” is not a matter of hidden contents, but of circumstances. We already navigate these shifts with ease. The difficulty arises when we begin to treat these flexible expressions as if they were reporting fixed elements of experience. The same temptation appears in the case of images. We say that the figure “moves,” and before long it is suggested that motion is somehow perceived in the image itself. The language, which began as a way of speaking within a shared practice, is taken as a description of what is present. Something subtle has changed, though nothing in the image has.
If we turn from the tomato to more familiar visual effects, the situation does not become more obscure so much as more ordinary. Consider the Ames Room illusion, where one figure appears to grow while another shrinks as they move across the space. When first encountered, the effect can be striking. But once recognised, it does not continue to mislead in quite the same way. We learn how to take it. We would not normally say that one person is in fact larger than the other, any more than we would say the tomato is green. We say that it looks that way under certain conditions, from a certain position. The effect remains visible, but it no longer governs what we say is there.
JL Austin shed some light on cases like this, noting how easily we move between “looks” and “is” without confusion. A straight stick half-submerged in water may look bent, but this does not lead us to believe that something has happened to its shape. The appearance is accommodated without needing to be granted independent standing. From here, the earlier examples begin to settle. A photograph or drawing may prompt us to say that a figure is “moving,” just as a shadow may suggest depth or a surface may seem wet. These belong to everyday experience. They arise quickly, and they are widely encountered, but they do not require us to suppose that motion, depth, or wetness have somehow entered into the thing before us.
What is striking is how little strain is involved. We do not feel that our perception is being tested or stretched in these situations. On the contrary, they are often treated lightly, even playfully. A reflection that resembles water is not puzzling; a painted highlight that reads as gloss is simply effective. A sequence of still images that gives the impression of movement is familiar enough to pass unnoticed most of the time. In that sense, these are not special cases at all. They do not sit at the edges of perception, revealing hidden mechanisms. They are woven into ordinary experience. We encounter them, recognise them, and where it suits us, make use of them. The same drawing that seems so immediate on first viewing can, on a second look, be seen as nothing more than a set of marks. The shift is not dramatic. It is simply a change in how the situation is taken.
It may be tempting, at this point, to say that in such cases we have a special kind of experience—one in which motion, depth, or transformation are somehow present despite not being physically realised. But this temptation begins to look less necessary once the earlier pattern is kept in view. The case of the tomato did not lead us to multiply colours; the Ames Room does not lead us to multiply sizes. In each case, we accept the object as steady and allow for the possibility that what is immediately taken need not settle what is the case.
Something similar holds for moving images. When we watch a film, we speak naturally of people walking, turning, speaking to one another. The language is easy, and it works. But we do not ordinarily suppose that what we are seeing is a set of bodies displaced across space in front of us. We understand the arrangement. If anything, the familiarity of the situation allows us to move between ways of taking it without friction—seeing it now as a scene, now as a projection, now as a play of light.
What emerges, across these examples, is not a new category of perception, but a continuity. We see, we take, and sometimes we take wrongly. Where the mistake is obvious, we correct it without fuss. Where it is stable and repeatable, we may even rely on it. But in neither case do we need to say that something has been added to the object, or that perception has taken on a different form.
The earlier claim—that a picture might be perceived as temporally extended—can be approached again from this angle. What seemed at first like a substantive proposal begins to look like a redescription of something already familiar. We are observing that certain arrangements are readily taken as part of an unfolding event. That is true enough. But it does not follow that time is present in the picture, any more than it follows that greenness is present in the tomato when wrongly described.
To put the matter gently: we may already have all the resources we need to describe what is happening, without asking more of the description than it can carry.
If we draw these threads together, what comes into view is not a new account of perception, but a quieter adjustment in how we speak about what we already handle with ease. Across the examples—tomato, room, drawing, film—the same pattern repeats. We encounter something, we take it in a certain way, and where necessary, we correct ourselves. The correction does not require a shift into a different kind of experience; it is simply a refinement of the same one.
This is perhaps easiest to miss where things work smoothly. The drawing that “moves,” the film that “shows” people walking, the surface that “looks wet”—all of these pass without comment because they serve us well. They guide attention, support recognition, and allow us to proceed without hesitation. It is only when we pause over the language, or attempt to give an account of what is happening, that the need for clarity arises. At that point, the temptation is to treat these ways of speaking as pointing toward something present in the experience itself—as if motion, depth, or transformation had entered into what is seen. But the earlier cases suggest a different approach. We need not multiply what is given in order to account for what is said. The flexibility lies in our use of language, and in our readiness to take things one way rather than another. Seen in this light, the force of the examples is cumulative but modest. Nothing dramatic is uncovered. There is no hidden layer revealed beneath ordinary perception. Instead, what becomes visible is the steadiness of a practice: we accept the object as fixed, and we allow that our immediate taking of it may sometimes need adjustment. Where no adjustment is required, we simply carry on.
If there is any surprise here, it may be that so little turns on the distinction. The difference between seeing rightly and seeing wrongly, between taking something as it is and taking it as something else, does not divide experience into separate sorts. It only marks a difference in how well we have settled into the situation before us.
