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Historical Threads
A thread follows one event or historical theme across the archive, wherever and whenever it appears. Pulling a thread opens up a narrowed timeline view filtered to every year that thread touches.
The adoption of primitive tools by humanity's evolutionary predecessors. Hard pounding stones and chipped scraping implements would, gradually, over millions of years, complexify into sharp spear points, bone needles, and stone axes. Some of the earliest tool usage in evolutionary human history is generally attributed to Australopithecus Afarensis, with tool industry beginning to proliferate widely by the time members of the genus Homo such as Homo Habilis and Homo Erectus emerged.
