It's 2:30 in the morning and no matter how hard I try I can't get to sleep. I had some coffee in the evening, which might have something to do with it, but that was six hours ago. There's a storm brewing outside. Other than the occasional roll of distant thunder and the hum of the air conditioner there is nothing but silence as I sit here on the bedroom floor with my laptop in the dark. My mind won't stop working but I have no coherent thoughts.