Why you should change your mind: The power of letting your Ego go and cognitive dissonance
"The decision to join one group or another was often based on the flimsiest of pretexts, but it had remarkably long term consequences. Very few economists after their ideological stance. They stick to it for life...Fewer than 10 percent change "schools" during their careers, or 'significantly adapt' their theoretical assumptions... It hints at the suspicion that the intellectual energy of some of the world's most formidable thinkers is directed, not at creating new, richer, more explanatory theories, but at coming up with ever-more-tortious rationalizations as to why they were right all along."