http://www.nature.com/news/2010/100811/ ... 0.399.html
Roy.
Early tool use.
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Early tool use.
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Minimalist
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Re: Early tool use.
Some of the cuts are V-shaped in cross section, for instance — a shape characteristic of those made by sharp tools — with scratches inside the cuts left by the tool's rough edge. Other marks showed signs of scraping, and still others indicated that the bones had been bashed with blunt rocks — perhaps in an effort to reach the marrow.
This implies that the users had the cognitive ability to recognize that a sharp stone performed differently than a big rock used as a hammer.
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Re: Early tool use.
And from there to producing a sharp edge would seem not too large a step, I think.
Roy.
Roy.
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Minimalist
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Re: Early tool use.
Depends on the geology of the area they were in. Some stones, shale for example, breaks easily and will give any number of sharp edges. Flint/chert take a little more work.
Something is wrong here. War, disease, death, destruction, hunger, filth, poverty, torture, crime, corruption, and the Ice Capades. Something is definitely wrong. This is not good work. If this is the best God can do, I am not impressed.
-- George Carlin
-- George Carlin