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Cake day: July 2nd, 2023

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  • Ohh I thought the illusion was maybe that it moved or something but no, turns out it’s not a spiral at all? Just circles. Trippy.

    It is a unique illusion, where the observer can verify the concentric strands manually.[3] When the strands are highlighted in a different colour, it becomes obvious to the observer that no spiral is present.[4]