cavfancier wrote:I should just pipe in here that the dude spent 4 hours on the radio defending his thesis, and still wasn't convincing. However, I do find the idea of a gene that hard-wires us for 'belief', not 'god' an interesting postulation.
"A gene for X" is a much misused figure of speech that doesn't have a solid basis in molecular biology most of the times it surfaces in public debate. We have a lot more hereditary properties than genes, the bulk of those properties is influenced by more than one gene, and the influence is statistical, not deterministic. There are cases where there is literally "a gene for X", but they are very rare compared to our number of genes and our number of characteristics. Therefore, when biologists talk about "a gene for X", this is their jargon for saying "the probability of a person featuring X is correlated with the person carrying this and this variant of gene Y".
This jargon is helpful because it simplifies the biologists' every-day language, and because every biologist knows it is spoken with poetic license. Journalists, by contrast, have an annoying habit of taking scientists' words literally and going of peddling juicy soundbites of jargon rather than the carefully hedged exact statements. That way, the jargon enters the debate with no qualification, and the public debate usually ends up being nonsense.
I suspect this guy on the radio is good example of it. If the findings in the Minnesota twin studies are for real, they show that the probability of a person being religious depends in part on hereditary factors. This is interesting, and worth paying attention to. But the conclusion that there's "a god gene" is a gross exaggeration, and almost complete nonsense. Frequently quoted nonsense, no doubt.