I paid attention as the air steward ran through the safety announcement.

The instructions had changed. In an emergency, we were to exit through the roof of the plane. The route was through small marked holes in the ceiling. We should now check the small saucer-sized circles above our heads.

If I breathed in, I might be able to squeeze my way out, but what about the overweight man in the row in front of me?

I stopped worrying about all this when Avery (the young American woman seated next to me) complained that she couldn’t find her entry in the Edinburgh Fringe programme. I found it in seconds.  She wasn’t looking hard enough.