Mike
FWIW, I agree with you.
"I don't know" is a powerful statement. As science continues to solve the great mysteries of the cosmos, there is an intellectual shift away from religion towards a perception that science carries the answers.
Until then, "I don't know (yet)" is a reasonable answer if you believe that science will tell us.
May I ask, however, why it doesn't apply both ways? Why does DD have to "prove" his viewpoint for you to accept it? IOW why is "science" a more acceptable oracle than "God"?
Regards
JR
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1