"That one," instructed Dimanche.
It received a coin. In return, it rewarded him with a large shower of change. The money spilled to the floor with a satisfying clatter. An audience gathered rapidly, ostensibly to help him pick up the coins.
"There was a circuit in it," explained Dimanche. "I gave it a shot of electrons and it paid out."
"Let's try it again," suggested Cassal.
"Let's not," Dimanche said regretfully. "Look at the man on your right."
Cassal did so. He jammed the money back in his pocket and stood up. Hastily, he began thrusting the money back into the machine. A large and very unconcerned man watched him.
"You get the idea," said Dimanche. "It paid off two months ago. It wasn't scheduled for another this year." Dimanche scrutinized the man in a multitude of ways while Cassal continued play. "He's satisfied," was the report at last. "He doesn't detect any sign of crookedness."