What if I tell two prisoners: "If one of you informs on the other, he'll get off with a 1 year sentence, and the other goes to prison for 10 years. If neither

What if I tell two prisoners: "If one of you informs on the other, he'll get off with a 1 year sentence, and the other goes to prison for 10 years. If neither informs, you both go to prison for 5 years." Does that sound like game theory, or just carrot-and-stick? Here are other examples of game theory in real-life. I'd say we're in the same category: http://en.wikipedia.org/wiki/Prisoner%27s_dilemma#Real-life_examples http://en.wikipedia.org/wiki/Prisoner%27s_dilemma#Real-life_...