TL;DR:
The transition from the “1.0” Eurasian lineages to the Sapiens 2.0 (الإنسان العاقል) model was defined by a massive expansion of the Prefrontal Cortex (PFC), a biological “charge” that transformed the Rift Valley into a high-pressure laboratory for cognitive flexibility. Unlike the Ice-Age-adapted Neanderthals who specialized in physical sensory-m…
