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I had been told from school onwards that the best definition of a human being was man the tool-maker - yet I had just watched a chimp tool-maker in action. I remember that day as vividly as if it was yesterday.
从上学起，我就被告知，对人类最好的定义是人类是工具制造者——然而，我只是亲眼目睹了黑猩猩工具制造者的行动。那一天我记忆犹新，就像昨天一样。