Hi, I spent all night arguing with Grok-3 about the Incas and their building skills. Sacsayhuamán, the Inca fortress looming over Cusco, Peru, dazzles with its massive stones—some 100 tons, carved into tight, curved fits, no mortar, no gaps. History credits the Inca, a stone-age empire of 10 million, with its 15th-century construction. But Mark, … Continue reading Did the Inca Really Build Sacsayhuamán?