Ears

As I was flying across the country I began to realize that planes are very loud, and the people talking on the plane are even louder. As I closed my computer, I began to be jealous of the easy way in which it slips into hibernation. For some reason, we cannot just sleep whenever and wherever we want. We say, "I am going to sleep." We close our eyes and try to find a comfortable position and then nothing. We wait for some unknown chemical reaction to take place in which we move from awake and alert mode to sleep and subdued mode.