Well put, rhetor. Just another way of evading responsibility for our decisions. Liberals always seem to come up with them.
A similar thing happens occasionally in linguistics. Lefties like Steven Pinker (author of "The Language Instinct") have written of a "grammar gene" that causes us to use, for example, prepositions in a certain way. In theory, if the gene is faulty, such a person would consistently misuse this part of speech, despite training; additionlly, the bad gene should be transmissible to offspring. Pinker et al. became very excited back in the 1990s when such a family was in fact discovered (in Britain, I think) and wrote that this proved the existence of such a gene. On closer study by a different group of researchers, however, the family turned out to be simply SEVERELY mentally handicapped -- not just in language, but in everything, including an inability to tie their shoelaces correctly. Would this therefore point to the existence of a "shoelace tying gene?" It turns out Pinker and his fellow libs simply selected which parts of the data they wanted to look at and ignored the rest.