Ancient ostrich eggshell engravings hint at humanity's first geometric grammar
TL;DR
Analysis of 112 engraved ostrich eggshell fragments from Diepkloof, Klipdrift, Apollo 11 and Namibia shows that over 80% display coherent spatial organization—grids, parallel lines and right angles—indicating intentional, systematic thought and suggesting an embryonic visual grammar marking early geometric and abstract thinking about 60,000 years ago.
A 60,000-year-old clue to how humans first thought The Jerusalem Post
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