Evolution cannot account for morality

[Jehanne]

None of us are authorities; does it really matter what any of us think? 

Of course it matters what we think. Why even have a conversation if you have no respect for the opinions of the people you are conversing with? Even if I disagree with people, I always take their opinion into consideration because it's always possible that I am wrong.

Don't view most of as being authorities, unless we are citing (even implicitly) authorities in support of our positions. Board members, such as Polymath, are, of course, an exception, but, then again, no one can speak with absolute authority, the exception being the unanimous consensus of a scholarly community on some issue, but, then again, history has shown such consensus to be at times fallible.

Scientific truths are contingent truths, testable and correctable.