"Y-y-you don't have to call me dear," she goes with a nervous wave of her arms.

No one ever has before, after all. She adjusts her glasses and points out the apps on her device, starting with the one with the picture of an old-fashioned phone handset.

"Th-this is the phone part. A telephone. I click that, put in the number I want, and I can talk to other people who have telephones without us being in the same place."