Inquiry is the heartbeat of dialogue. A monologue answers, while a dialogue asks. A monologue is as narrow as the mind, but a dialogue reaches as far as infinity, or the square root of two.

Imagine a cave with a long entrance open to daylight leading away. In the cave there are prisoners who have been there since birth. The are chained to a wall so that they can only see the back of the cave and not the light from the entrance.