" two British researchers culled through decades of research, concluding that boredom should “be recognized as a legitimate human emotion that can be central to learning and creativity.”30 Falling into boredom allows our brain to tune out the external world and tune into the internal. This state of mind lets loose the most complex instrument known to us, switching the brain from the focused to the diffused mode of thinking. As the mind begins to wander and daydream, the default mode network in our brain—which, according to some studies, plays a key role in creativity—lights up.31 "

― Ozan Varol , Think Like a Rocket Scientist: Simple Strategies You Can Use to Make Giant Leaps in Work and Life