Bifalgorithm post

Why did isolated ancient civilizations across the world all build giant pyramids? While no vertical towers survived, it wasn't alien technology or secret. Global trade pour dry sand on a table. The grains automatically slide, forming a slope called the angle of repose without steel beams for tension, stone only handles compression, stacking higher forced ancient engineers to make the base wider, but massive stone weight creates intense downward pressure that can crush internal rooms. That's why the pyramid shape was the only geometry physics allowed for ultra structures yet to survive millennia. They also engineered internal relieving arches to redirect thousands of tons of stress outward. Different cultures didn't copy each other. They independently converged on the same physical reality.

Why did isolated ancient civilizations across the world all build giant pyramids? While no vertical towers survived, it wasn't alien technology or secret. Glob…