Thanks for the group selection link. Unfortunately I'd have to say, to the best of my non-expert judgement, that the current trends in the field disagrees somewhat with Eliezer in this regard. The 60s group selection was definitely overstated and problematic, but quite a few biologists feel that this resulted in the idea being ruled out entirely in a kind of overreaction to the original mistakes. Even Dawkins, who's traditionally dismissed group selection, acknowledged it may play more of a role than he previously thought. So its been refined and is making a bit of a come-back, despite opposition. Of course, only a few point to it as the central explanation for altruism, but the result of my own investigation makes me think that the biological component of altruism is best explained by a mixed model of group selection, kin selection and reciprocation. We additionally haven't really got a reliable map as to nature/nuture of altruism either, so I suspect the field will "evolve" further.

I've read the values argument. I acknowledge that no one is claiming the truth is BAD exactly, but my suggestion here is that unless we deliberately and explicitly weigh it into our thought process, even when it has no apparent utlity, we run into unforeseeable errors that compound upon eachother without our awareness of them doing so. Crudely put, lazy approaches to the truth come unstuck, but we never realise it. I take it my post has failed to communicate that aspect of the argument clearly? :-(

Oh I add that I agree we agree in most regards on the topic.