Two thirds of the world's population now carries a mobile phone but this was state-of-the-art technology just 35,000 years ago. This is the earliest ground-edge implement ever found.
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.