The Watchmaker: my fav argument

[Belacqua]

That’s the beauty of the design argument—everything is “design”. All you have to do is call it so. There is no non-design to compare it with so it will always be a win win argument.

Of course calling it so doesn't necessarily make it so. The argument may be wrong.

Like all metaphysical arguments, it isn't something science can solve. We can only argue for or against it, more or less persuasively. That's why it's extremely important to be aware of one's prior metaphysical assumptions, and think about whether they are relevant in any given case. We wouldn't want to take a position merely out of habit.