Have you ever noticed how quickly we fill silence? A conversation ends and we reach for our phone. We get into the car and immediately turn on the music. We stand in a queue and begin scrolling. A few quiet moments appear, and almost instinctively, we look for something to place inside them. I used to think this was simply a habit. But now I'm not so sure. Sometimes, early in the morning, before the world fully wakes up, there is a brief window of quiet. No messages, no conve