This is, in fact, the origin of philosophy and of dialogue itself. Questions are a deep structure in our thought and language and social nature. When we ask a question, we not only express an interest, thus exposing our own passionate natures, but we also have some sense of the type of answer we're going to receive. For example, when Aristotle asked why a plant grows, he looked for an answer that had to do with intentions and values. Darwin asked the same question differently.
Questions are also primarily social.
We may ask ourselves a question the way we may sing in the shower, but first and foremost, a question is something we ask someone else. And rarely is it in a pure question and answer format, like a transaction with a knowledge vending machine. Because of the organic nature of questions, they grow best in the light of conversation. Real questions, like real conversations, require mutuality and equality. Now compare that to the implicit promise of a question.