60,000-year-old ostrich eggshells reveal humanity’s first brush with geometry

Archaeologist Silvia Ferrara described the organization of lines by recurring principles—parallelisms, grids, rotations, and systematic repetitions—as an embryonic visual grammar.
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Ancient Fragments Could Be The World's Oldest Known Geometry

Fragments of decorated ostrich eggshells. (Texier et al., J. Archaeol. Sci., 2013) Ancient humans were surprisingly creative, ...