@sometime sun,
Is imagination more important than knowledge? What matters is relevance!
Medicine men may not be able to cure what takes surgical procedures, his forefathers didn't have much imagination of ineventing hightech thingies, but it takes great and correct knowledge in order to do a surgical procedure, there the imagination will only cause harm.
Can you have one without the other? Yes, but with them both you can achive much greater things.
Which came first the theory of the proof?
The question or the answer? Relevance? ..beware of getting lost in navel gazing.