Mullah Nasrudin was in a village he was visiting for the first time. He rushed into a shop, and demanded of the shopkeeper:

“Have you ever seen me before?”

“No!” answered the owner.

“Well then,” asked Nasrudun. “How do you know it’s me then?”

You might think that an ancient Persian folk hero would have little to say a 21st century citizen, but I think you’d be wrong.