The OP looks to me like a reboot of the old 'indirect realism' argument, but just using different words.
If you want to think you are seeing the object, then think that. If you want to think you are seeing a representation of the object, then think that instead. The difference between the two is nothing but word choice. — andrewk
No, that's not what I'm arguing. Look at the nearest pane of glass. This thread is about whether what's seen 'through' the glass are the very same objects that would be seen if the pane was removed.
It's about the extent of your field. Does it extend beyond the pane and terminate at the surfaces of the things in the world beyond the glass, in the same way it would if there was no pane of glass. Or, does it terminate on the surface of the glass?
Imagine a windowless room. Somebody comes along and mounts a high-def TV screen on the wall disguised as a windows (with a frame etc). On the other side of the wall is a little webcam which sends data to the TV of the world outside. The high def TV disguised as a window displays this data as an moving live image of the world outside the windowless wall. Someone enters the windowless room, looks at the image on displayed on the disguised (as a window) TV screen and thinks he's looking out a window at the world beyond the (windowless) room. He fell for the illusion. The depth of his visual field ends at the TV screen, he's not actually looking at the world beyond the windowless room. If someone came along with a chainsaw and cut a square hole in the wall of the windowless room, then you could look through the hole at the world beyond the room. The depth of your visual field would extend out beyond the hole into the world beyond the room and terminate at the surface of the objects you were looking at. When the man looked at the TV screen he could only see as far as the TV screen on the inside of the wall. Now when he looks through the chainsaw cut hole he can see a lot further than before, out at the world beyond the hole - he is actually looking at the world outside the room. Whereas before, although he thought he was looking out at the world beyond the wall when he looked at the crisp moving image on the disguised TV screen - he was falling for an illusion. He could only see as far as the image on the TV screen. He was mistaken in thinking he was looking *through* a window at the world outside the (windowless) room.
Now, when a glazier comes along and fits a pane of glass (which is a solid object) into the square hole cut into the wall by a chainsaw, what happens? Does the man in the room see the world beyond the pane of glass, in much the same way as when it was just an empty hole in the wall. Is he looking at the very same objects which exist outside the hole in the wall, glass pane or no glass pane fitted? Or, when the window pane is fitted into the chainsaw cut hole, is the pane for the man in the room much like the disguised TV screen which once occupied the same place as the new window? When he looked at the TV, although he thought he was looking *through* a window at the world beyond the (actually windowless) room, he was mistaken, he was falling for an illusion. Is it much the same case when the pane of glass is fitted into the chainsaw cut hole? Whereby he *thinks* he's looking *through* the pane of glass at the world beyond the room, in much the same way and at the very same things that he was looking at when he was just looking through the empty chainsaw cut hole in the side of the wall, but in actuality, much like the TV screen which presented an image of the world outside the wall that he *mis-took* for the actual world beyond the wall (he didn't realize he was looking at an *image* of the world beyond the room) he is again falling for an illusion, mistaking an image on the inner surface of the pane of glass (much like the image on the disguised TV screen) for being the actual world beyond the room.
Is glass actually 'see-through'? You can see through the chainsaw cut hole in the wall at the world outside, is it the very same things you are looking at when the pane of glass is fitted into the hole? Although a solid object has now plugged the hole in the wall, does the extent or depth of you visual field (the distance between your eye and the the thing it's looking at) go *through* the solid object (glass) and extend out into the world beyond the wall and terminate at the surface of the objects out there (which WAS happening when the hole was just empty, when you were just looking through the empty hole in the wall cut by the chainsaw)?
Do we see an image on the glass of the world behind it, or does our visual field penetrate through the solid object and we see the actual things existing beyond the pane of glass, the same objects which we would see, and the same extent of our visual field as would be, when there was no pane of glass fitted and we were looking through an empty hole in the side of the wall?
It LOOKS as if we seeing ***through*** the pane of glass, we THINK we are seeing the world beyond the pane (the same things which would be seen if not pane was fitted), we INTERPRET what we are seeing when we see a window as being the world beyond that window, as if the glass were 'see-through'. BUT, and this is the entire point of this thread; what we are ACTUALLY seeing when we look at glass is an image on the surface of the pane. And this is analogous to seeing an image of the world beyond a wall on a TV screen. That most of us (not me) are falling for this illusion (they are making the wrong interpretation of what they are seeing, they think they are seeing the world beyond), does not mean that it's not an illusion.
What's the point of this theory? Why reason do I have to be saying this?
Because, when we look (supposedly) through glass, and if we remove the glass and then look through the hole in the wall, WHAT WE SEE DOES NOT LOOK EXACTLY THE SAME. If we are looking at the very same objects, why do they look different? Again, look 'out' your windscreen at the road/world beyond the car, and then stick your head out the side window and look at the road,and then go back and forwards. Why does the road not look exactly the same? If you removed the windscreen and did the same thing, the road WOULD look exactly the same (because you actually would be looking at the same road). When the windscreen is fitted, and you are SUPPOSEDLY seeing the very same objects you were seeing when there was no windscreen, WHY DO THEY LOOK DIFFERENT?
When you look at the rocks at the bottom of a lake, why do they wobble and warp around? They are not wobbling or warping, if you drained the lake they'd be still and stable. If it is the very same rocks you are looking at, why does it bend and warp and wobble when they're submerged under the water, and yet appear still and stable when the lake is drained? How do we explain this? We don't want to say that the rock is literally melting and wobbling and warping around, as if water somehow drastically changed the nature of the rock, rather, we want to say that the rock under the water has the same still and stable properties as when it is not underwater. We THEREFORE have to say that although the rock *appears* to be wobbling and dancing around on the bottom of the lake, it is not. It is actually not warping, and it is still at the bottom of the lake. It is an illusion, it just looks that way.
How does this illusion work? If (a big "if"), it is the very same rock which we are looking at both submerged under the lake and when the lake is drained, if in both cases we are looking at the same thing, why does it wobble and warp in one case, and not in the other? How can we be looking at a solid non dancing around non warping object, and yet it appears that way? What is the mechanism by which an object can appear one way, and yet in reality be a completely different way AND YET IN BOTH CASES YOU ARE SEEING THE VERY SAME OBJECT. You can't have it both ways, you can't be seeing how something merely appears (to be warping, moving, dancing around, a different colour) and yet also be literally seeing the actual rock.
You have two completely different things, a warping, dancing rock, jiggling around to the sway of the water. And a solid stable rock which when the lake is drained is not. How are you, in both cases seeing the very same object?
How cab you be seeing a bent stick that's not bent? When you look at the bend/kink (and warp), how are you are actually seeing a straight stick. When you see the kink, you are actually see a straight stick, and yet it's the vary same object you are looking at. It clearly looks kinked, and yet it's actually straight, and when you look at the kink, you're seeing a straight stick. How can this be? How can an object clearly look kinked, warped and disjointed, and then look solid and straight, and in both cases it be the very same object? And for some reason how it appears when not underwater is in actuality how it is. And not the other way round. Why is the stick not in actuality a warping dancing disjointed stick that merely appears straight when not submerged?
How can you have appearance, and reality, and yet in both cases be seeing reality?
Things look bigger in a magnifying glass. But they are not actually bigger. How can you be seeing something which clearly looks bigger and yet it's still the same size, and in yet both cases it's the very same object being seen? How can it be bigger, and the same size, at the same time.
You might say it merely *appears* bigger/closer, and I'd agree. But I'd say you are seeing a mere appearance, an image on the surface of the magnifying glass. Whereas you'd say you're looking *through* the magnifying glass at an object which appears bigger/closer than how it really is and yet this is not really a mere appearance because it's still the same object that you are seeing magnifying glass or not. It appears bigger/closer, when in reality it's not, but yet you're still looking through the magnifying glass at the reality. How can the very same objects be both bigger and closer, and at the same time the same size and further away, and yet it's the same objects being seen, as if you are looking *through* the magnifying glass at the object beyond.
You want it both ways. You want to say you're seeing how something merely appears, and not how it actually is (eg "the rocks at the bottom of the lake are actually still, they just look like they're dancing around), and yet it's the very same object being perceived. How can a fish be in one place but really be another, AND YET YOU ARE STILL SEEING THE SAME FISH. You could stand on a wharf and point at a fish caught in a little trap below the surface. Then drain the lake, stand in the same place and point at the fish again. You're not pointing at the same spot, your arm is not pointing in the exact same direction. How can this be? How can you pointing directly at a fish underwater, but in reality you're pointing in the wrong direction because it's not in the place you're pointing to, and yet you're still pointing at the same fish. Either the direction/ location you are pointing to is wrong, or it's not. They can't both be right.
This is utterly confused and to me at least, just saying "refraction" is nowhere near a satisfactory explanation. My theory easily deals with this; when you point at the fish (supposedly) underwater, you are actually pointing at an image of a fish on the surface of the water (and most likely falling for the illusion of thinking you are literally seeing *through* the water at a fish below the surface). A fish can appear in one place and yet be in another, because you are not seeing the very same fish. There's a fish below the surface of the water swimming round, and there's an image seen on the surface of the water of a fish swimming around. It doesn't appear to be an image to most people (as in, they don't realize what they are seeing is an image, they think they are seeing *through* the water at the actual fish below the surface) but it is. People who think they are seeing an actual fish below the surface, as if the water is 'see-through', as if their visual field extends beyond the surface of the water and down into it extending to the fish and the bottom of the lake around the fish, are wrong. They are falling for an illusion. Water is not 'see-through', the extent of your visual field stops at the surface of the water, you are not seeing anything beyond the surface, the surface of the water displays an image of what is behind it.
How does it do this? In the same way a mirror does. Surely you don't believe a mirror shoots beach your visual field beyond you, as if it's the very same object being seen in the mirror, and when you turn your head around and look. You see an image in the mirror, which really does look like it has depth beyond the surface of the mirror, but it doesn't. The same thing happens with glass, it presents an image which appears to be actual depth beyond the surface of the glass, but it's just an image. That you mistake this image for the world beyond doesn't make it so. Likewise, that you mistake the face in the mirror for literally being your face as if you've ripped your eyes out and turned them around, does not make it so. Mirrors do not rebound your gaze and shoot it off in directions so that you can look at an object without actually facing it. Surely you can't believe this is so, at least on reflection. My theory is that glass without a silver backing (a window) does much the same thing. The mirror displays an image whats in front of it, the window displays an image of what's behind.
If you find this hard to believe then go look in a mirror and ask yourself if the face you see is the very same face you would see if you ripped your eyes out and turned them around. Does this actually make sense? Like if you can see in a direction that you aren't even facing, why can't you do feel? Why can't you stick your hand into the mirror and feel your own face? Sounds absurd, the mirror is a freaking solid object right? And besides, you can't reach with your hand one way and yet be feeling something in the opposite direction. Right?
Then why can you do it with vision? Why can you look straight ahead at a solid pane of glass, have your point of focus even further beyond the pain (like a stereogram) and yet be seeing the actual objects behind you? When you look at a mirror, you see a person which appears at a depth beyond the mirror, which is correlated with your bodies distance from the mirror. It looks as far behind as you are in front. My theory is that it's not correct to therefore interpret the body you are seeing in the mirror, as being the same literal thing that you inhabit. That makes no sense, to think that when you look in the mirror at 'your' hand, it is the literal same object as when you look downwards at your hand. This is wrong and if you think this then you are being fooled by an illusion. Because they are not the very same thing, one is your actual hand, the other is an image displayed in the mirror. An analogy would be when you go on Skype and look at yourself in the screen and wave about your hand, the hand that you see on the screen is an image displayed on the surface of the screen, whereas the hand you're waving around is your actual hand. Nobody (intelligent) thinks that the two hands are literally the same object, as if the computer screen shoots backwards the direction of your gaze. Why do they think that way when it comes to mirrors, and if they don't, if they realize that the mirror is merely displaying an image, then why is clear glass any different? A mirror is just clear glass with a reflective backing, all the backing changes is that the source of the light coming from the pane of glass to your eyes, comes from the objects in front of the reflective backing, whereas with glass with no reflective backing (windows) the source of the light is from behind the pane. If you agree that the mirror displays an image, then you must agree that so too does glass without reflective backing, there's literally no difference other than the direction the light came from before it travels from the surface of the glass to your eyes. With a mirror the light comes from the objects in front of it, hits the reflective back which turns the light waves around (so to speak) which then travel to your retina. If in this case you believe that what you are seeing is an image in the mirror (which you should), then you should also believe the same thing of clear glass, there's no fundamental difference between the two. Mirrors display an image of the world in front of them, glass (and all clear things) display an image of the world behind them. Once we realize it's an image then we can easily account for all the illusions associated with glass/clear things. You stick your arm in the water and it appears bent at the incorrect angle, and appears to be wobbling around even though you aren't moving it, and your hand appears visually to be in a slightly different location that the feeling in your hand. How to explain this? Should we screech "REFRACTION" and think anyone who disagrees with us is a retarded moron who needs an understanding of basic physical theory? Or should we recognise that the water is not 'see-through', we are merely seeing an image of a hand on the surface of the water - you're not looking at your actual hand below the water, and it appears to be wobbling around due to the way in which water alters the direction of light. I really shouldn't need to bring in theories of light and refraction and the "physical world" but it appears some people in this thread can't actually look at a pond without bringing in that theoretical backing. So it's going to looking something like:
Light is emitted from sun. It travels to the pond on earth. It penetrates through the surface of the pond and into the water, because water is physically transparent - lightwaves can travel through it. You've stuck your hand below the surface. The light which is travelling through the water reaches your hand below and is 'turned around' (your hand is not physically transparent (please can we just say it's turned around and not complicate this further with absorption of particular colours, - although this explains why things appear darker in water, or appear pink in lemonade, or the world looks blue when you look through the top tinted part of your car windscreen). The light which is turned around by your hand below the surface, travels back in a different way than it does through air (I believe it travels slower? Either way it doesn't matter). Depending on the surface angle of the water, is the direction the light travels outwards from the surface. That is, if there's a wave going through the water it spreads out or concentrates the direction of the light depending on whether the surface of the water is convex or convex (i.e. what part of the wave is above your hand). The light travels out into the world at those various angles. Your retina detects the light which is concentrated upon it by the lens of your eye (same sort of thing as the wave does with the light waves). The rods and cones in your retina respond to light entering these cells by emitting an 'neuronal pulse'. The neuronal pulse travels through a series of cells in the optic cord, and then through and across (from the eye the pulse came from) the brain into a part of the brain nearer the back called the visual cortex. [SCENE MISSING]*. You then experience the visual perception of seeing an image displayed on the surface of the pond which is an image of the rocks on the bottom, your hand below the surface, and possibly a fish. The image wobbles and moves around depending on the flatness of the surface it's displayed on. The image of your hand is darker than your actual hand, because a lower amount of light is reflected by your actual hand when it's underwater than when it's above. The image if your hand is displayed on the surface of the water, not in a location which is say there's a straight line from your hand under the water to your eye, the image is not displayed on the part of that straight line which the surface of the water touches. The water refracts the light. So we must imagine this line as being kinked at the surface of the water. The image on the surface of your hand shows a hand in a different spot that where your hand below the surface actually is. The image appears to have depth so when you look at the hand in the image, your point of focus is not at the surface but rather is below the surface (much like a stereogram). Nevertheless you don't literally see world behind the paper displaying the stereogram, likewise you don't see what is actually below the surface, it is an illusion. Falling for this illusion is when you mistake the image of the hand, as in you interpret/think that what you are seeing is not an image displayed on the surface (in the same way a stereogram is actually printed on the surface of paper), but is rather your actual hand below. Not falling for it means you are cool like me.
Ok, in this gigantic post I've tried to be excruciatingly clear, and painfully over-explain everything. If you still don't understand then I literally give up, I don't know how I can make the theory any clearer. If you do understand but don't agree and have an argument why, I'd be interested to hear.
*nobody in the world knows what happens here and how/why