A stranger took the seat I’d paid extra for, laughed at me holding my six-week-old, and told a flight attendant she refused to move. They put me three rows behind my ten-year-old.

And Delphine — twenty-six years, three stripes, the calmest woman I have ever watched work — said:

“Bonnie, I’ve been standing here two minutes and you’ve said ‘the girl’ and ‘a child’ four times. Her name is Maya. She’s in 11B. She’s been sitting next to you for twenty-five minutes and you never once looked at her.” She took the lanyard off the seat. “That’s the actual problem. You didn’t take a seat. You looked at a woman with a baby and a girl with a backpack and you decided neither of them was a person who’d say anything. You’ve been right about that before, haven’t you.”

Bonnie didn’t answer.

That non-answer went through the cabin like weather.

Because a hundred and forty strangers heard a purser say you’ve been right about that before to a woman with a staff badge, and every single frequent flyer in that airplane did the same piece of arithmetic at the same time — how many times, and to whom, and would I have noticed.