The Movius Divide: A Techno-Cognitive Gradient, Not a Cultural Chasm, in Lower Paleolithic Eurasia

The Movius Divide, first proposed by Hallam Movius in the mid-20th century, posited a significant technological dichotomy in the Lower Paleolithic across Eurasia. West of this imaginary line, encompassing Africa, Europe, and Western Asia, Acheulean bifacial handaxes were prevalent, while East of it, in East and Southeast Asia, lithic assemblages were characterized primarily by simpler chopper-chopping tools. Traditionally, this divide has been interpreted as a cultural or cognitive gap, suggesting differing levels of technological sophistication or intellectual capacity between early hominin populations. However, recent archaeological discoveries and re-evaluations of existing evidence increasingly challenge this rigid interpretation. This paper argues that the Movius Divide is better understood not as a cultural chasm, but as a techno-cognitive gradient influenced by a complex interplay of factors, including raw material availability, environmental constraints, adaptive strategies, and nuanced cognitive demands. By examining the variability within lithic industries on both sides of the line, considering the inferred cognitive processes, and integrating new findings from East Asia, we propose a more dynamic model. This model acknowledges varying technological expressions rooted in similar underlying cognitive capabilities, adapted to specific ecological and resource landscapes. The paper aims to deconstruct the traditional Movius Line narrative, offering a more nuanced perspective on Lower Paleolithic hominin behavior, dispersal, and technological evolution across Eurasia.