[donh]

But I've seen intelligent design, and everytime I've seen it, I've reasonably assumed a designer is behind it.

Post hoc, ergo propter hoc, thy name is Fester.

[Ichneumon]

[But I've seen intelligent design, and everytime I've seen it, I've reasonably assumed a designer is behind it.]

Post hoc, ergo propter hoc, thy name is Fester.

Looks more like "begging the question", "circular reasoning", or even "affirming the consequent" -- although admittedly, when someone's claims get confused enough, it's so amorphous that it can qualify for more than one category of fallacy at the same time.

Furthermore, there really needs to be a name for a new form of fallacy often employed by creationists: The "it's irrefutably true because it's something I happen to believe" argument. Call it Argumentum Footstampus, perhaps, or "Argumentum Arrogantum.