Creativity is clearly an important means by which we enable our own cheating, but it’s certainly not the only one. In an earlier book (The Upside of Irrationality) I described an experiment designed to measure what happens when people are upset by bad service. Briefly, Ayelet Gneezy (a professor at the University of California, San Diego) and I hired a young actor named Daniel to run some experiments for us in local coffee shops. Daniel asked coffee shop patrons to participate in a five-minute task in return for $5. When they agreed, he handed them ten sheets of paper covered with random letters and asked them to find as many identical adjacent letters as they could and circle them with a pencil. After they finished, he returned to their table, collected their sheets, handed them a small stack of bills, and told them, “Here is your $5, please count the money, sign the receipt, and leave it on the table. I’ll be back later to collect it.” Then he left to look for another participant. The key was that he gave them $9 rather than $5, and the question was how many of the participants would return the extra cash.