User blog comment:DoctorBleed/A Million Little Things of Bleach: On Rejection, Disappointment and Contests/@comment-24101790-20151122071028/@comment-10789912-20151122195129

That's actually the exact opposite. In real life, people aren't stable character archetypes. People are unpredictable, and change their views almost constantly. Our personalities aren't defined. In a story, the goal is to make them very realistic, but we must set a base character archetype that they will change from. This basic rule itself breaks that line.