That night, I dreamt that I was in an underwater world. Everything was murky and dark, and I had to hold my breath. I could sense others around me--humans or fish I couldn't tell--who could breathe the water. They were waiting to see whether I would learn how. But they offered no help. I swam up through the gloom toward a bright patch where there was assembled a large group of people, millions it seemed. I searched the crowd for a friendly face I might rise up to. I woke up gasping.