What he noticed about the room in his dream was what wasn’t there. Eggshell white walls but no windows. No posters with inspirational sayings. A grey formica slab of a desk but no drawers or sides, just thin metal legs.

I was clacking through Queens at about 40 miles per hour, on a train destined for my Long Island stop. My state and location was known in the physical world. But my consciousness was elsewhere.