explains universe🌐 on Instagram: "This timeless geometry illusion uses wooden spheres stacked like billiard balls to trick the eye. A triangle made of 15 balls arranged in five rows has one ball removed, leaving 14. When these are repositioned, they appear to form a perfect four-row triangle, yet four balls are somehow left over. It feels like a ball vanished—but nothing actually disappears. The secret lies in spacing and packing. The larger triangle has tiny gaps created by hand placement, whi

Inflyta on Instagram: "The instagram reel showcases a physical sliding puzzle gadget embodying the "project triangle" dilemma, where orange sliders adiust visibility of "FAST, ""CHEAP, " and "GOOD"labels, demonstrating that optimizing two attributes compromises the third. Posted by Gluneafaw on December 14, 2025, the clip amassed over 1million views and 2, 600 likes, with replies praising its ingenuity, noting background music like AUR's "Betty, " and sharing an Amazon purchase link for the devi

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