"I used to keep a list of my favorite airports," I said to my friend on our most recent girls trip, referring to a time in my life long ago when I was jet-setting around the South Pacific as a backpacker.
"I still keep a list," my friend said. "Gotta know how you're gonna sleep."
"Exactly!" I said.
"My airport point system is based on how far I have to walk to get to my first-class lounge room, the comfort of the bed there, the strength of the shower and how long it takes me to get my Champagne delivered. Also the food."
"Oh, so maybe not exactly," I said, having absolutely no idea what she was talking about.
"What did you judge the airports on?" she asked.
"Whether the TVs were too loud for me to sleep, whether the AC was too cold for me to sleep and whether they'd even let me sleep on the floor overnight after I got my bags."
"Oh," my friend said, having absolutely no idea what I was talking about. She works for a major tech company. She flies in a reclining pod.
This year in science studies, both of my children learned about what humans need to survive. We need air, they learned. We need fuel, they learned. We need shelter, they learned.
"Is Tube Toilet our shelter?" they asked.