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A visual illusion has sparked controversy on several websites, showing what appears to be a color image of a group of students, but actually completely colorless.
The black and white image is used as an extraordinary way to deceive the human brain, through an optical illusion based on the printing of dashed lines on students.
But when you focus on the image, we see that it is not colored at all.
The photo was posted on the Reddit website before being posted on all websites.
"For me, the green and blue lines work better and create a fantastic placebo," said a social network user. The red color is a grid on a gray background. "
"I know that the human eye can see the shades of green more than any other color, but I imagine we see the color red faster because it involves the danger of the color of the blood itself" , said another user.
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