Spady supports transformational outcomes because they are future oriented, based on descriptions of future conditions that he feels should serve as starting points for OBE designs. True to the spirit of the reform philosophy, little mention is made about specific things that students should know as a result of being in school. It is in devising learner outcomes that one's world view comes into play. Those who see the world in terms of constant change, politically and morally, find a transformation model useful. They view human nature as evolving, changing rather than fixed.
Christians see human nature as fixed and unchanging.
We were created in God's image yet are now fallen and sinful. We also hold to moral absolutes based on the character of God. The learner outcomes that have been proposed are controversial because they often accept a transformational, changing view of human nature. Advocates of outcome-based education point with pride to its focus on the student rather than course content. They feel that the key to educational reform is to be found in having students master stated learner outcomes.