jan 1, 1956 - Lionel and Roger Penrose devise the concept of impossible shapes

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"The concept of the impossible shape was first devised by the psychologist Lionel Penrose and his son, mathematician Roger Penrose."

"The two believed their creations were impossible to recreate within the confines of our universe."

"Despite the incredible ingenuity of Lionel and Roger Penrose, their minds were ultimately unfit."

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