Example of the hidden picture puzzles in the black/white images on the left; corresponding real-world picture on the right. (IMAGE)

Duke University

Example of the hidden picture puzzles in the black/white images on the left; corresponding real-world picture on the right.

Caption

Example of the hidden picture puzzles in the black/white images on the left; corresponding real-world picture on the right.

Credit

Courtesy of Maxi Becker

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Please credit Maxi Becker

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