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The original was posted on /r/todayilearned by /u/tamaovalu on 2025-03-20 17:57:51+00:00.

Original Title: TIL that 3D animation is actually modeled mathematically in 4 dimensions because the mathematics is easier. So what you see on a screen is a shadow of 4D figures into 3 dimensions that are then projected onto a 2D screen.