A group of people were touring a university campus and they noticed several students on their hands and knees assessing the courtyard with pencils and clipboards in hand.
“What are they doing?” a woman asked the tour guide.
“Each year,” he replied with a grin, “The upperclassmen ask the freshmen how many bricks it took to finish paving this courtyard.”
When we were out of earshot of the freshmen, the woman asked the guide: “So what’s the answer?”
The guide replied, “One.”