This story is about three accountants who doubted their three engineer friends. They were traveling by train to a conference. The accountants bought three tickets, but the engineers only bought one. "How are three people going to travel on only one ticket?" an accountant asked.

"Watch and you'll see," said an engineer.

They all boarded the train. The accountants took their seats, but the three engineers crammed into a restroom and closed the door behind them. …