The comment written by the editor of Dart’s article Dr. Alan H. Kelso shows how few scientists accepted the new ideas of Dart and Ardrey.
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(The names of Dart and Ardrey were combined by the professor Arturo character in the series into "Drayer" who purportedly came up with his world's "killer ape theory".)
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Another obvious evidence would be the rejection of Dart’s thesis by a scientific convention at Livingstone (Zambia, South-Africa), what led Ardrey into writing his book African Genesis.