Clete
I agree but simply making that claim isn't an argument, right? And, if you're debating an atheist who doesn't care about Genesis chapter 1 then it would be you who had the burden to prove the veracity of that claim, not the atheist's burden to disprove it because you're the one making the affirmative claim.
If atheists do not have to prove what they believe only by faith with interpretations of scientific evidence for support then neither do Christians have to prove what they believe by faith with interpretations of scientific evidence for support.
Two wrongs do not make a right. Right? If an atheist is being irrational and tries to make a faith based scientific argument, that doesn't give us the right to make the same error. On the contrary, the way to win such a debate would be to point out the atheist's error, not endorse it by copying it.
Every single premise in a rational argument that is not conceded as true by both sides must be established by the side who's argument is BASED on that premise. It is not the atheist's burden to prove your premises false, it is your burden to prove them true. Likewise, it is not our burden to prove the atheist's premises false but theirs to prove them true.
So, if the atheists argument is based solely on natural observations then the veracity of those natural observations must be established. If they are so established then the argument stands or falls on the veracity of the logical connections being made between those observations and whatever conclusions exist in the argument. If it is our argument that either the evolutionist's observations or his logical connections are faulty
BECAUSE of the existence of God then we are the one's who have God's existence as a premise, and thus it is on us to establish the veracity of that premise.
Now, that doesn't mean that someone can't take up a logical burden if they so choose to do so. Many do and with great success, but the point here is that there is no obligation for one side to disprove the other's premises. Simply challenging them is sufficient to win the debate IF the challenged side proves unable or unwilling to establish the truth of their premises.
Of course, one side losing a debate doesn't prove the other correct. There are lots of reasons one might win or lose a particular debate, not the least of which is one's skill at handling logic, which is what this whole exchange has been about. I want you to lose as few debates as possible, particularly on the topic of evolution.
Clete