Hi Neutral.
You ask a couple of good questions. So, like the inveterate debater that I am, I intend to answer the first with my own question.
I knew that already, but just wanted to point out that there is always the possibility of the supernatural.
My question: Why? I mean, why should we consider the "possibility of the supernatural" when exploring phenomena in the real world? Believers make the claim that we MUST consider the "supernatural" to be a possibility because there is no way to
disprove it. Even die-hard agnostics make the weaker claim that we cannot know whether the "supernatural" was involved in whatever phenomenon we are considering. However, the supernatural is indetectable by natural means, yes? If it were detectable, even indirectly, it would no longer be "supernatural" by definition. Therefore, it makes no sense to consider the supernatural as a possible causative factor in natural phenomena. To me, then, the supernatural has no relevance, and thus is unnecessary (and in fact worse than useless) as an explanation for any observable phenomenon.
So... To stop these useless reminders, is "goddidit" always an already presumed option when discussing evolution related topics?
Believers would answer "yes". This is one of the key elements in the debate, after all. Non-believers would respond as above - that consideration of the "goddidit" hypothesis is an irrelevancy when attempting to understand nature. For us, it is NOT an option that is worthy of consideration. Believers insist otherwise - although without any support for the contention.