We often forget the absolute magic of the audio story. If we go back to our childhood, we can remember being read to- even if we couldn’t see the page. Our imagination fills in the worlds that are drummed up through sound in a way that the visual medium could never accomplish. If you don’t believe me, try this experiment some time. Turn on a television show on TV and make sure you can’t see the picture. You’ll be able to follow along in most cases to the story. Then try the reverse. Watch the show without sound, and you may get the broad strokes, but more likely you’ll miss out on what is actually happening.
Still don’t believe me? Ask David Tennant and Kenneth Branagh