5,300-year-old 'bow drill' rewrites story of ancient Egyptian tools | Hacker News

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		[dupe] 5,300-year-old 'bow drill' rewrites story of ancient Egyptian tools (phys.org)
		14 points by PaulHoule 5 hours ago \| hide \| past \| favorite \| 1 comment

		help

helsinkiandrew 34 minutes ago [–]

Previously (80 comments): https://news.ycombinator.com/item?id=46970733

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