What would happen to conversation if we limited all our verbal interactions to what we can PROVE? What would happen to imagination? What would happen to "What If?"

Facts are black and white. Imagination brings color to the world. Would you rather live in a colorless world or do you like the world as it is...even though it isn't perfect or symmetrical? Facts are limited to reality. Is that a wide enough place for you to inhabit or do you like going outside the box, outside lines, so you can soar in your imagination where no one has gone before? Why?