Walking into Albertson's, I passed an employee pushing a long line of shopping carts back to the store. I asked her: "Do you know how that cart pusher they use at Sam's club works."
"No, what's that?"
"They put the pusher on the end of 50 or more carts, and the clerk guides them from the front end back to the store. It's powered by a battery. I'm an engineer and haven't figured out how they make it start and stop."
"Wow, an engineer. You must have an IQ. I have always wanted to get tested to find out if I have one."
"I'm sure you have one," I said as we walked back to the store together.
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