technology-induced atrophy

This morning I went to the nearby bigbox hardware store. This is the first time I've had so much fun buying Christmas lights because, when I got to the selfserve checkout machines, I was told that the whole store's computer system was down. I find that funny? Well, it wasn't funny to see the human cashier try to remember how to fill up a receipt and be unable to figure out the tax. The funny part is that I had to calculate it for the store.