t_w said:
snip snip to address a single issue
As to 'this is outside science's realm', this is a statement that shows a true lack of understanding about what morality is and what science is. Evolution can explain, or attempt to explain, the existence of morality. Nothing else can.
It appears that you miss my point. and in doing so fall prey to another kind of error about science.
Look at the issues in socio-biology or evolutionary psychology. Can evolution explain the rise of morality or talk about a morality module inside human beings. Yes of course it can, people do it all the time, that is what that field does. Can they announce that they have found all the reasons for this module, for ethics, for morality, for societal laws? no. that is a claim of sufficiency of explanation. Science doesn't do that either, metaphysics and worldviews make those claims. Science claims this as a potential and well evidenced claim, not a sufficient one.
In fact, if ethics and morality are a gift from God, science can't and won't talk about that at all. Partly because it can't see it because of it's commitment to methodological naturalism, partly because scientists are God-phobic and don't even want to be accused of talking that way. Does that mean that morality is not a gift from God and that science has proven it is not. of course not, that is the category error or confusion of levels error, where you are asking the wrong metaphysical questions of science.
take a scenario. say science shows a region of the brain that "lights up" when people think about God or morality. It terms this the God module. Does that prove that God is merely, only, sufficiently explained as, an evolutionary mechanism of survival of human beings? no. it is the problem of induction, the problem of sufficient explanations. It is one of a number of explanations, only some of which are scientific, or accessible via scientific methods. But nonetheless, such information would help define and refine those other not-scientific explanation as they try to deal in the real world.
science can and does talk about morality. but it doesn't "do" morality in the form of assigning good and bad labels to things.
it develops and propagates theories that talk about things but never in a sufficient metaphysical manner, also aware that it's tools don't work in the metaphysical realm.
however this does not stop Dennett, Dawkins, SJG(rip) etc from making metaphysical statements that purport to be scientific ones.
however the demarcation line between science and not science and between science and metaphysics is not a clearly understood boundary.