If that is an objectively true and rational statement, then we ought to be able to do more than just assert its truth - we ought to be able to prove the truth of it. Let's see if we can do as Rand says we should, and check our premises by proving the truth of it. I'll let you start. Heck, I'll let you finish it and do all the middle parts too ;)
A well evolved rationale. Creative, too.