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This is one of the most popular illusion that became a hype all over Facebook, WhatsApp and other social media sites and messengers. It is an interesting illusion. While some join it with faith, it is merely an illusion that works on a principle. If you carefully try to find out the reason, you can at least come across one explanation i.e. our mind projects the white part as the visible one and the black part as the invisible one when we stare at the wall.

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You can see that it appears like both of the fingers are in a straight line and they are pointing on the same point. But when we meet the diagonals, you can see that they are not. The finger A is pointing a bit above from the center point. Surprising right?

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Yes that center dot is no doubt grey. You can check it in any image editing software. You can even check by covering the surrounding dots with your hands. You will realize that it is indeed Grey only. So why does it appear green? It is because of the surrounding colored dots and the background color. Our mind is forced to perceive that it is actually green. Let us give you another shock now. What if tell you that all the other green dots are also grey actually? Surprised? Go check out for yourself.

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