Kennedy, J.R. (psychologist) The Medical Journal of Australia March 25th, 1978, p. 339:
The significance of anthropological studies for human behaviour is not so much the similarities humans share with animals but rather the similarities between humans of vastly different cultural (and therefore learning) backgrounds. Primitive societies should not be regarded as humans in their “natural” state nor a halfway point between animals and our present state of development. These societies are complex and often more restrictive than our own.
Bohm, Dr. David in Towards a Theoretical Biology Ed. C.H. Waddington, Aldine Publishing Co. 1968:
One of the best ways of a person becoming aware of his tacit metaphysical assumptions is to be confronted by several other kinds. The first reaction is one of violent disturbance. Nevertheless if he will stay with it rather than escape into anger or unjustified rejection of contrary ideas . . . he becomes aware of the assumptive character of a great many previously unquestioned features of his own thinking.
Martin, Dr. R. New Scientist August 4, 1977:
As far as geologically more recent evidence is concerned, the discovery in East Africa of apparent remains of Homo in the same early fossil sites as both gracile and robust Australopithecines has thrown open once again the question of the direct relevance of the latter to human evolution. So one is forced to conclude that there is no clearcut scientific picture of human evolution.