is this really the case? you mention "genetic fitness". but the father of the theory, charles darwin, who wrote the definitive book "origin of species" was unaware of the existence of genes, wasnt he? the term "genetic" does not need the concept of a "gene", i guess, but has it not been stated in the history of evolutionary biology that unlike mendel, darwin did not say much about this? perhaps referring to darwin is inappropriate? any modern text on evolutionary biology, which restates and expands on darwin's original work, will no doubt rely on the notion of genes and genetic fitness. but once again i am not sure that terms such as altruism or selfishness are fundamental... it seems to me that one can construct a fairly good description of evolution without these terms. perhaps i should try to do so, in order to convince myself that such is not the case?
--ravi