The next morning, Jon's family had a visitor. The man rang the doorbell and waited for someone to answer. When he thought that no one would come (either because no one was home or because everyone was still asleep - it was early in the morning), he began to turn away.
But just as he turned, he heard the door begin to open.
"Yes?" the person at the door asked.
He turned back and smiled. "Good morning. I'm going door-to-door to demonstrate my newest invention. Would you like to see it?"
"Uh, sure. Okay," the person said.
The man smiled even more, then opened his briefcase.
