TPO11-Which hand did they use - 英檢

最後的整合題

6) Nick Toth, a modem right-handed toolmaker. has shown that prehistoric tools
were knapped to fit the right hand

PA. 6: Occationally one can determine whether stone tools were used in the
right hand or the ledt, and it is even possible to assess how far back this
feature can be traced. In stone toolmakingexperiments, Nick Toth, a
right-hander, held te core (the stone that would become the tool) ib his ledt
hand and the hammer stone i nhis right hand. As the tool was made, the core was
rotated clockwise, and flakes, removed in sequence, had a little crescent of
cortex(the core's outer surface) on the side. Toth's knapping produced 56
percent flakes with the cortex on the right, and 44 percent left-oriented
flakes. A left-handed toolmaker would produce the opposite pattern Toth has
applied these criteria to the similarly made pebble tools from a number of
early sites (before 1.5 million years) at Koobi For a, Kenya, probably made by
Home habilis. At seven sites he found that 57 percent of the flakes were
right-oriented, and 43 percent left, a pattern almost identical to that
produced today.

好像沒錯阿....@@?

麻煩板友幫忙指出來，看很久都看不出所以然


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