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The question needs to be subdivided somehow. If we mean that reality is a projection of the mind and the eye as a mirror of the soul. These are very different things. We are all well aware that when we dream, we understand that the eyes are not involved in this process, but we see. But when we talk about the mirror of the soul, when a person smiles with the soul, we also see the sincerity of the smile, in this case the eyes do not lie. With respect.
“eyes don't lie” is not about the eyes at all as a receiver of information from outside, but about transmitting information to the outside. About the fact that the eyes are a “mirror of the soul”. You can tell by your eyes when a person is lying. If of course you can watch.
Oh! Even as they lie! To begin with, they see only one, so to speak, “octave” of electromagnetic vibrations: wavelengths from about 380nm to 760nm. They just don't see the rest. And there are a lot of interesting things there. For example, ordinary flowers would look much more interesting, and in some ways more true, if the ultraviolet part of the spectrum were available to us. In principle, we do not perceive all electromagnetic waves reflected by the flower. The eyes hide from us information that we don't really need, but could be interesting.
Secondly, our eyes are very inert. A short flash of light causes an aftereffect of ~ 50ms. I.e., the light is no longer there, but we still see it. For this reason, for example, we do not see the monitor screen blinking, because flickering at a frequency of 60 Hz already easily deceives us with our eyes, masquerading as a uniform unblinking light. For the same reason, you don't notice the 25th frame. For the same reason, prestidigitators get the opportunity to show us tricks with cards that disappear or appear out of nowhere in their hands. It is not an exaggeration to say that our own eyes help magicians deceive us.
Third, our color perception is literally confusing. Take, for example, the yellow color from the rainbow. What does it consist of? From light with a wavelength of ≈580nm. If you try to decompose it again with the help of a prism, you will not succeed. This is a spectrally pure yellow. Now look for a yellow square of exactly the same shade on the monitor screen. In fact, this is a completely different yellow. It can be easily decomposed, for example, into red and green. If our hearing worked with exactly the same assumptions, then you can imagine that, for example (I'm coarsening it for clarity), the note ” do “would sound like “do”, ” mi “— like” mi”, and” re “would not be needed at all-you could not distinguish just” re “from the harmonic consonance”do”+”mi”. It would, for example, sound indistinguishable from”re”. All the world's music would be completely different! Our ears do not lie to us in this sense: there are several harmonics in the sound — we hear them all, i.e. we hear a chord.
And all this happens thanks to the eyes as such. That is, our brain has not yet started working on image processing. The brain can deceive us even more subtly.
So in the pandan to the phrase “eyes do not lie”, you should always keep in mind another quote: “… do not believe your eyes!”.
The eyes are just a sense organ. It does not participate in the processing of information, it only receives it and sends it to the brain. So the eyes can't lie, and neither can the stones.
To say that the brain “lies” is not entirely correct. Because the brain simply interprets information as it “knows how”.
For example, if a person has color blindness, then he is missing some cones in the eye.
That is, the brain does not receive information about some of the light waves.
But it interprets the available information as best it can.
Yes, a colorblind person sees colors distorted (relative to normal vision), but it is wrong to say that the brain is lying to him.
In general, all human senses can make mistakes, because the brain plays its own games) So sour taste may seem sweet, etc. �So everything is deceptive.