Almost all discussions involving politics or economics unfold in this manner, with each participant attempting to justify fixed, a priori positions instead of trying to learn something or to adopt a different frame (even for the novelty). It is for this reason that conservatives and liberals alike believe their positions to be self-evident, particularly as they become more extreme. Given certain temperamentally-based assumptions, a predictable conclusion emerges—but only when you ignore the fact that the assumptions themselves are mutable.

