Sure you can. If you can rule out all causes for a phenomenon that aren't of an omnipotent nature, then you're left with one choice.
That's of course even assuming that ID theory posits an omnipotent designer, which it doesn't. It only posits an intelligent designer - one that can act with foresight.
How can you rule out "all possible causes"?
How, for example, could Newton -- a very smart man -- rule out DNA as the locus of heredity?