"Brains seek a balance between exploiting the knowledge we’ve earned and exploring new surprises. In developing over eons, brains have gotten this tension well balanced – an exploration/exploitation tradeoff that strikes the balance between flexibility and rigor. Too much predictability and we tune out; too much surprise and we become disoriented. We live in a constant tug-of-war between routine and novelty. Creativity lies within that tension."
~ David Eagleman