Abstract
The anatomical study of the fossilized remains does not tell us when man emerged, and we must have recourse to other methods of approaching the question. Bergson's answer to it is often quoted. Man, he said, appeared on earth at the time when weapons and tools were first fashioned. For the paleontologist, as for the student of pre-history, the phenomenon of man's becom ing man is contemporary with the first appearance in history of implements.
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