Bonnie & Clyde
"Have you heard of the Prisoner's Dilemma?" Clyde said.
"Never," Bonnie said. "What is it?"
Clyde lowered his car window and tossed his cigarette. "It's this theory about how two captured criminals will always turn on each other."
Bonnie took off her aviators and looked at him. "Always?"
"Because of self-interest."
"How would it help you to betray your friend?"
"OK, imagine this. Two people commit a crime together, get arrested, and are put in separate rooms in prison."
"Can they talk to each other in jail?"
"No," Clyde said.
"Aw," Bonnie said. "That's so sad."
Clyde rolled his eyes. "That's not the point. The point is that the cops give each of them a deal. They can either stay silent or snitch on the other."
"What happens in each case?"
"Well, if they decide not to talk, they'll each get one year in prison. But if one of them rats the other out, he'll walk away a free man while the other gets three years behind bars."
"That sucks." She bit her nails. "And if they both snitch?"
"Then they'll each go to jail for two years."
"Wait, that makes no sense," Bonnie said. "If both of them shut up, they go to jail for a shorter time than if they betray each other."
"So why do they do it?"
"Because snitching is always the better option regardless of what the other person does. If you snitch and the other doesn't, you're a free man. If both of you snitch, at least you'll be in jail together."
Clyde looked out the window. "That's how the theory goes, anyways."
Bonnie touched his hand. "Clyde?"
"If we get caught -"
"But if we do, do you think that'll happen to us?"
Clyde shook his head. "No. The theory assumes that both prisoners are rational." He looked at her and smiled. "We're in love."
Bonnie laughed and they kissed. After they broke apart Clyde looked at his watch.
"It's time," he said.
Bonnie took two pistols from the glove compartment and gave one to Clyde.
"Can I kill the guard?" she said.
"Of course," he said.
She smiled. "Thank you."
They exited the car and walked towards the bank. A security guard was at its entrance.
"Good morning," Bonnie said.
She raised her gun and shot him in the head.
Faye Dunaway in "Bonnie & Clyde"
American Cool Exhibit, National Portrait Gallery, Washington D.C.