The study of shapes and spaces in five dimensions, where the fifth dimension is often considered probability or possibility space—the dimension where all possible outcomes branch from every moment. In 5D geometry, objects have five perpendicular axes, allowing for forms that contain not just every point in space and time but every point in every possible timeline. A 5D sphere (a 5-sphere) would appear in our 3D world as an infinite series of branching possibilities, each intersecting with our reality at points of decision. 5D geometry explains why you always pick the slowest line at the grocery store (you're just experiencing the branch where that happens) and why there's a version of you that's already finished shopping (they're in a different 5D coordinate).
Example: "She applied 5D geometry to her love life, realizing that in the fifth dimension (probability space), there were infinite versions of her dating infinite versions of her crush. In some branches, they were happy; in others, miserable; in others, they'd never met. Her 3D self was just one coordinate in an infinite possibility space. She found this either comforting or terrifying, depending on the branch."
by AbzuInExile February 16, 2026
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