Downtime replenishes the brain’s stores of attention and motivation, encourages productivity and creativity, and is essential to both achieve our highest levels of performance and simply form stable memories in everyday life. A wandering mind unsticks us in time so that we can learn from the past and plan for the future. Moments of respite may even be necessary to keep one’s moral compass in working order and maintain a sense of self.

Scientific American

The Importance Of Pretend Play In Child Development from Scientific American