Rigidity: The world has become increasingly complex in many ways, and whenever we humans face a situation that seems complicated our response is to resort to a kind of artificial simplicity, to create habits and routines that give us a sense of control. We prefer what is familiar—ideas, faces, procedures—because they are comforting. This extends to the group at large. People follow procedures without really knowing why, simply because these procedures may have worked in the past, and they become highly defensive if their ways are brought into question. They become hooked on a certain idea and they hold on to it, even if that idea has been proven repeatedly to be wrong. Look at the history of science: whenever a new idea or way of looking at the world is introduced, despite all of the proofs behind it, those who are entrenched in the old ways will fight to the death to preserve them. It is often against human nature, particularly as we get older, to consider alternative ways of thinking or doing things.
Mastery by Robert Greene