In the middle of the might I awoke to find Gregory sitting up in bed. "OK?" I asked.

"Yes. See that, that, that panel?" his pointing to the open bedroom door dressed in shadows from the nightlight just outside.

"Yes, I do."

Thinking. "One goes in and out." Thinking. Pause. "I guess I shouldn't be concerned."

He laid back down and returned to sleep, leaving me awake for a while, thinking.