I like that analogy, though a walkie talkie may be a more apt analogy.
I'm always reluctant to place limits on God. I'm flesh and blood, hauling around a soul in the universe God created from scratch. It's pretty good, but like all things it needs a slight nudge from time to time to keep going. Working out the way things work is not only fun but a duty, as far as I am concerned. We were not given intelligence and free will to sit on our asses, grunting and pointing.
We already know there are limits on what we can know.