It all depends on how sure you are that the Bible is just metaphors, and how much you take to be literal. There are varying degrees of acceptance as well. Some people believe in evolution, but also believe that a certain group of people, the ancestors of the Israelites, perhaps, came separately from Eden, which would explain how they reproduced, or rather how their children reproduced, as if there were not other people outside of Eden, God would either have had to create spouses for the children of Adam and Eve, or those children would have had to mate with eachother.
Myself and a friend of mine argued for quite a while with a friend of ours about that. Kev and I had agreed that Adam and Eve weren't the only two people, otherwise (even this far down the line) effects of inbreeding would run rampant, would they not? Our friend, however, could not accept this fact. "God made it so there wouldn't be inbreeding", to which Kev replied, "So my brother and sister can have kids without consequence?" Yeah, she didn't talk to us for a day after that


My brain has been swiss cheesed like Scott Bakula's on Quantum Leap