The earliest strategies of stone software making, known as the Oldowan “industry,” date back to no less than 2.3 million years ago, with the earliest direct proof of device usage present in Ethiopia inside the Great Rift Valley, relationship back to 2.5 million years in the past. This era of stone device use known as the Paleolithic, or “Old stone age,” and spans all of human history up to the event of agriculture roughly 12,000 years in the past. The use of instruments by early humans was partly a process of discovery, partly of evolution. Early humans developed from a race of foraging hominids which were already bipedal, with a mind mass approximately one third that of modern people. Tool use remained comparatively unchanged for most of early human historical past, however roughly 50,000 years ago, a complex set of behaviors and tool use emerged, believed by many archaeologists to …

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