At the end of the day, we are dependent on our experiences. They are the most concrete facts of our lives. We assemble this chaotic stream of sensations and perceptions to make order and sense of things. But the world is not static or stable, and the structures of belief that help us navigate our world must evolve continually if we are to remain on top of things. No matter how elaborate or perfect your system of belief may seem, it is vulnerable to the steady pace of change over time. The world turns, things change, and beliefs that once served you well will no longer be valid.
