In his book The Artificial Ape, Dr Timothy Taylor convincingly argues that humans are biologically a product of technology. If Taylor is correct, then the ground edge stone tool pictured is of enormous significance. Stone tool-use among our earliest hominid ancestors dates to 3.4 million years ago, but the use of grinding to sharpen stone tool edges is very recent. This is the oldest ground-edge stone tool ever found and represents bleeding edge technology 35,000 years ago.
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