"So there is a second task needed in winning people over to a vision... Not only must there be thorough exegesis, there must also be a portrayal of the vision that satisfies the heart as well as the head. Or to put it another way: we must commend the beauty as well as the truth of the vision. We must show that something is not only right but also good. It is not only valid, but also valuable; not only accurate but also admirable."
This quote speaks of biblical manhood and womanhood ( ...), but I think the truth of vision casting for anything should take on both the factional rationale and the appeal to the heart. What a great application for any teacher, evangelist, or visioneer!
Recovering Biblical Manhood & Womanhood. Chapter 1 by John Piper, p. 33. Piper and Grudem, eds. Wheaton: Crossway, 1991.