Except morality is not something we can inherit genetically. Its more to do with social behaviour which is something evolution finds hard to explain. How agents can direct their own destiny and survival without genetics. Yes so humans can determine objective reasons why we should behave one way and not the other. Protecting and upholding human "Life" is a no brainer. You don't have to believe in God to know that one. Yet this is still an objective basis for morality and not left open to relative ideas about what is right and wrong.
Protecting and upholding life is a no-brainer? I'd say quite the opposite. If it's a no-brainer, vast swaths of humanity over the course of history must have been brainless. Approximately 50% of 21st Century Americans must be brainless.
When you say "humans can determine" and that this is an "objective" basis, you're responding to and agreeing with my second bullet while attempting to address my first. Turek would (and did) say, "No, this isn't an objective basis. It's merely opinion on a grand scale."
To the extent I accept evolutionary theory at all (which I did in my first post because I was presenting potential atheist arguments), we see in all species patterns of behavior that scientists regard as the product of evolutionary conditioning. It isn't irrational to me for an atheist to argue that what we like to consider
morality are, in fact,
behaviors that are the product of evolutionary conditioning, overlayed by a patina of opinion and law that humans have applied as they've become more sophisticated.
I think what you will find is that Turek atheist don't know morality as according to the CHristian doctrine all including non-believers have knowledge of Gods laws in their heart. Turek is merely saying that despite atheist being able to know and claim moral values they have has no basis for morality.
Yes, I know what Turek is saying - that was the whole point of my post. His point is that without an external authority (God), there is no objective basis for morality. Hence, atheists must "steal from God" to make moral claims.
The point of my post was that I don't believe this is true. If you
define morality as
requiring an external authority, as Turek pretty much does, you've simply begged the question. Bertrand Russell would've eaten an apologist like Turek for lunch.
You do make a point that somewhat bolsters my evolutionary arguments. We Christians argue that even pagans have a variety of morality planted in their hearts and minds by God. On what basis, other than the fact we believe in God and an atheist doesn't, can we answer the atheist who says "Oh, I agree, conscience is there - but it was planted not by God but by evolution"?
We can only argue, pretty much as you have done, "We don't think evolution can do that." But then, as I say, the atheist can point to numerous patterns of behavior in numerous species that could easily be misinterpreted as "morality" from the human perspective but surely aren't.
I'm not promoting atheism, mind you. But one of my pet peeves is apologetic arguments like "no morality without God" that have a superficial appeal but are embarrassingly lightweight and misguided.