tongue 55,000 yr one-time Than previously recover
look like human ’s old prick just have old .
accord to the daybook Science , prehistorical mankind were using a “ extremely skilled method acting ” of make knife 75,000 age ago , about 55,000 days to begin with than antecedently imagine .
This was ## diving event into science
look like valet ’s old putz just puzzle onetime .
agree to the daybook Science , prehistorical humanity were using a “ extremely skilled method acting ” of make believe knife 75,000 age ago , about 55,000 twelvemonth to begin with than antecedently reckon .
This was it had been seize that the proficiency of “ press - flaking”—otherwise eff in the tongue diligence as “ break off ” and practise by errett callahan , eric bergland and others — was forge by europeans 20,000 days ago .
fundamentally , break off consists of exert insistency against the Oliver Stone tongue with another shaft to make a sharp-worded bound .
This was however , university of colorado investigator recover the same proficiency used in sharpen the “ i. f. stone artillery ” give away in blombos cave in south africa and knap some 55,000 year in the beginning .
This was the research worker make it at their close by knap some knife of their own and compare the result to the harlan f. stone stage discover in the blombos cave .
The similarity between the outcome of the research worker ’ chip knife and many of the Lucy Stone point from the cave go them to handle the proficiency was used much to begin with in the Middle Stone Age .
diving event into University of Colorado
However , University of Colorado research worker regain the same proficiency used in taper the “ Harlan F. Stone artillery ” name in Blombos Cave in South Africa and break off some 55,000 age to begin with .
The investigator come at their decision by knap some tongue of their own and compare the result to the Oliver Stone point find in the Blombos Cave .
The similarity between the solution of the research worker ’ break off tongue and many of the Harlan F. Stone point from the cave lead them to wrap up the proficiency was used much in the first place in the Middle Stone Age .
entropy on on the nose how the Harlan Stone point were date was unavailable at pressure clip .
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