Mark Liberman has a good essay on why we shouldn’t be seeking genes for X here.
Melbourne-based, Sydney affiliated historian and philosopher of science, especially biology. Apple tragic. Pratchett fan. Curmudgeon. Punster. Fatso.
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Years and years ago, in the first heyday of Sociobiology, in the mid 70s I think, there were lots of people talking about the gene for this and that — with even less basis, obviously, than at present. The reductio ad absurdum that someone proposed then was the gene for cooking. After all, the behavior is universal and advantageous and unique to our clade, so there must be a gene for it.