Not the talk I expected

I was the guest speaker at the U3A meeting in Sunniside Club last week. I turned up with my laptop to give a talk on what history taught me about self-sufficiency. The problem was that I had actually been booked to give my talk about the Washingwell Roman fort. Fortunately, my error was rectified as I had the Roman fort presentation on my laptop. A quick switch of files and problem solved. The talk itself went down well. The self-sufficiency talk is not wasted. I have been booked to give it later this year by another group.