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date: 26 August 2019

Abstract and Keywords

The origin of technology is believed to have marked a major adaptive shift in human evolution. Understanding the evolutionary process(es) underlying the first human adaptation to tool use, and the subsequent process(es) that led Homo sapiens to become the only extant primate fully dependent on technology, is one of the most stimulating topics of research of present-day archaeology. New fields of research have been founded (e.g. primate archaeology, Pliocene archaeology) during the quest to find out how old technology is, where it originated, and who were the first tool users. Historically, the vast majority of the information on this topic comes from the study of lithic (stone) tools, tools whose manufacture was generally believed to be a uniquely human characteristic until well into the 1960s. The production of lithic technology was linked first to the origin of the earliest hominins (the taxonomic group comprising modern humans, extinct human species, and all immediate human ancestors), being thought to have co-evolved with traits such as bipedalism or hunting/scavenging, and later to the evolution of the genus Homo and accompanying increases in brain size. As a result of breakthroughs in the field of primatology, and greater interdisciplinary work between archaeologists and primatologists, a paradigm shift in beliefs surrounding the uniqueness of human technology is underway. Following discoveries from the second half of the 20th century and the early 21st century, habitual tool use, tool manufacture, and the production of flakes are now known to occur in extant non-human species, firmly decoupling brain size expansion, bipedalism, and the origins of technology. Knapped stone tools and cut-marked bones have been discovered dating to ca. half a million years before the earliest evidence of Homo, giving rise to the possibility that earlier, previously unconsidered hominins, or even other extinct non-human primates, could have been responsible for the inception of tool use and manufacture. Following these advances, it is reasonable to hypothesize that the origins of technology may lie much further back in time than the earliest discovered modified stone tools—perhaps as far back as the late Miocene with the last common ancestor of Homo and Pan. Moreover, discoveries of lithic technology in more distantly related species, where convergent evolution is the most parsimonious explanation, strongly suggest the existence of multiple evolutionary pathways for technological emergence. While there is still much to unearth, the extension of the antiquity of modified stone tools, combined with the increased focus on interdisciplinary studies between archaeologists, primatologists, and paleoanthropologists, has gone a long way in overturning outdated beliefs by demonstrating that the development of technology is unlikely to have been a simple, linear process resulting from a single event or factor in the evolutionary history of humans.

Keywords: archaeology, paleoanthropology, tools, lithic technology, Oldowan, pre-Oldowan, primate archaeology, the comparative perspective, shifting paradigms

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