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Your Eyes Are Fooling You. These Two Blocks Are the Exact Same Color.

Optical illusion. (Image source: @retrodavid)

Your eyes are fooling you.

At first glance, these two blocks probably appear to be two contrasting colors. One looks grey, the other looks white. But, in reality, the two blocks are the exact same color.

You can reveal the illusion by placing your finger over the seam where the two blocks meet in the middle.

Optical illusion. (Image source: @retrodavid)

The illusion is often referred to as the "Cornsweet effect" and is explained in detail here.

(H/T: @retrodavid / Gizmodo)


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