Intelligent design type evolution vs naturalism type evolution.

[Mystic]

They could have other uses and be refined, feathers started out in dinosaurs as a way of insulating themselves and later gained their role in flight.

That is true. But feathers are a feature, not a complex system. Arms aren't completely different from wings. They have similarity. But I see your point. I guess I have to clarify the problem I am having with systems as opposed to features.

I have elsewhere given the examples of jaw bones being re-purposed as the small bones of the ear. This would seem to be something that has an entirely different purpose than the one it originally had. where once they opened jaws wider now they amplify hearing. There are probably innumerable other examples but I have given one and that is enough to destroy this particular line of argument.

Ok, I guess it's far fetch to say nothing can do this (like a feature of a system changing). But it seems like systems are different. For example, the turning thing in bacteria. How would it function without it's various parts. And what direction to it's various parts acting separately ever have to come together via evolution?

Also it's circular reasoning to just state "well this changed to this" without providing explanation how it possibly happened naturalism wise, but not explaining how the reasoning of Michael Behe (and I tried to show in this thread) is wrong?

Just because you dont think it happened does not mean it didn't.

True enough. I just have to get around my head and see how a complex system is possible through that direction.

It can do exactly that evolution uses what is at hand and if it conveys an advantage it uses it. Evolution does not have a direction.

If has no direction, how are that various parts ever going to develop and come together to a form a complex system?