Wallace Barrow walked over to the msueum to make photocopies. Neil introduced him to Billy Sideauli. "No ball and chain?" Barrow guffawed. He admired the air-conditioner. Neil opened a file folder he was carrying, holding all the information about the unit's special features. Barrow ran his finger down the list, speaking out loud the most important considerations regarding the machine's proper use. He then opened the folder he'd brought with him, and made his photocopies. Neil asked him if he had a small saw he could loan to the library. Billy would be needing it for the shelf re-allocation project. "Just make sure the jailbird don't saw through no window bars!" Barrow guffawed loudly, going out. "Call my boy, Reggie, at the monument shop," he called back to Neil. "Reggie will have a saw."

Neil now noticed that his file folder with the information about the air-conditioner was gone and, in its place, was Wheel's folder. While waiting for Wheel to come back for his folder, Neil thought to have just a little peek inside.

The next morning Neil called Wallace Barrow to ask him if he'd taken home the air-conditioner file folder the day before, leaving behind his own manilla folder by accident.

"Just a moment," Wheel said. "Damn! It's true. I'll be right over."

Wheel brought back the air-conditioner papers and retrieved his own papers and the copies he'd made of them. "Did you switch these?" he asked accusingly. "It's just not like me to do something like that. You must have switched the folders, Neil -- by accident, of course."

"Wallace, you took the wrong folder with you when you left here yesterday."

"No, I surely did not. Now who do you suppose would do a thing like that -- switch these folders? And how -- and why?"

"Wallace..." Neil started. But then he let it go.