I hate scratching my head with "I wonder what s/he meant by that?"
First of all, I'm an inept fill-in-the-unspoken-part practitioner.
Hence my pleasure at getting together with Phil Williams. He wears no barriers and carries no shields. We travel through Stevens-Johnson Syndrome, time in the burn unit, his family and their home, music, and 'the great perhaps,' among other things. 
We both dreamed of being engineers, the choo-choo kind, but for very different reasons. Nothing is out of bounds, including his argument why we might consider the advantage if we can sit in the dining car with total strangers.

Never know what's going to show up when you click 'record'!