Springboard,
You asked:
"What difference would evidence of intelligent design make?"
Well, I'd say that it would make no difference whatsoever for the ID-people, because evidence of intelligent design would only prove what they already believe to be true in the absence of evidence. (Or even in the presence of a huge load of evidence that supports an alternative story that actually
does provide an explanation, i.e. the ToE.) But, insofar as the ID-people are in fact Christians with a hidden agenda to promote the belief in their God, wouldn't it be priceless if some irrefutable evidence of ID popped up that said that the intelligent designers were actually spacefaring blobs of jelly, originating from a planet somewhere on the other side of the Galaxy? And that the evidence had a P.S. saying: "Oh, by the way, your God does not exist, that's just a thought we rigged your minds to come up with. Well, if seemed rather funny at the time."
Then you went on:
"[those?] that promote ID seem to do so with a particular agenda - e.g. to establish the existence and nature of a Christian God - but ID does not do this. So why bother?"
I think that a lot of ID-people cannot be denied a certain amount of ignorance and lack of understanding of even their own pet theories, let alone science as a whole. (Though admittedly, to understand "science as a whole" is a bit of a tall order.) This is what makes the discussion with these people a tad difficult, if not quite cumbersome. Perhaps it would be best if the discussion focussed on exposing and attacking their hidden motives. But of course, that's just my alien jelly blob legacy speaking.
Cheers.
{edited to correct "science as whole"}
[This message has been edited by Parasomnium, 07-18-2003]