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A comment on Ask HN: What where the key inventions in the history of mankind?.

Re:Ask HN: What where the key inventions in the history of m... by charonn0 on Tuesday November 13, 2012 @05:14PM (#4780949)
Speech and non-verbal linguistic communication.
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Re:Ask HN: What where the key inventions in the history of m... by no_gravity on Tuesday November 13, 2012 @05:21PM (#4780974)
I would suspect that speech can hardly be given an invention date. As it gradually evolved. Did apes speak already?
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Re:Ask HN: What where the key inventions in the history of m... by charonn0 on Tuesday November 13, 2012 @08:18PM (#4781535)
The origin of human speech is obscure and may never been known with any exactness or certitude. However, language has been known to develop nearly spontaneously in human groups: http://www.telegraph.co.uk/news/worldnews/centralamericaandt...
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