Generous Tit-for-Tat

Jeffrey Sachs says the strategy of generous tit-for-tat is the key to avoiding disastrous confrontation:

Threats of War, Chances for Peace, by Jeffrey D. Sachs, Scientific American: Although climate change, deforestation and depletion of groundwater are all serious threats to sustainable development, the biggest threat to future well-being remains the specter of war. The world was at the brink of a nuclear conflict during the 1962 Cuban missile crisis and could quickly find itself there again in South Asia, the Middle East, the Korean peninsula or some other hot spot. The Cuban crisis was transformed, through President John F. Kennedy’s political vision and dexterity, into the beginning of arms control in the 1963 Nuclear Test Ban Treaty. That historic breakthrough offers timely lessons for today.

The events of late 1962 through mid-1963 are well known. . . . . After coming within hours of war, the U.S. and the Soviet Union went on a few months later to sign a test ban agreement.

How does one go from the brink of war to a breakthrough peace treaty in under a year? Kennedy’s methodological starting point was to avoid ... declaring the adversary to be evil. At every step, Kennedy assumed that Soviet counterparts were rational, though not necessarily beyond mistakes in their chosen actions. He assumed that the Soviet Union would seek tactical advantages ... but would pull back from self-annihilation.

Today’s game theorists would describe Kennedy’s strategy as “generous tit-for-tat” (GTFT). A player adopts a position of cooperation as long as the other side does, too. If the second player begins to cheat, the first player stops cooperating as well, to show the cheater that there are adverse consequences... The door remains forgivingly open to future cooperation, however, if the cheater reverts... And generously, the first player might initiate renewed cooperation, with a view to enticing the former cheater to reciprocate. GTFT is so successful and robust that many evolutionary biologists suppose that the basic strategy is somewhat hardwired in human attitudes....

Kennedy ... stressed the need to avoid humiliating one’s adversary. “And above all, while defending our own vital interests, nuclear powers must avert those confrontations which bring an adversary to a choice of either a humiliating retreat or a nuclear war. To adopt that kind of course in the nuclear age would be evidence only of the bankruptcy of our policy—or of a collective death-wish for the world.”

Kennedy’s sentiments were radical at the time, but he believed that the potential for cooperation was grounded in our common humanity. “For in the final analysis, our most basic common link is that we all inhabit this small planet. We all breathe the same air. We all cherish our children’s futures. And we are all mortal.” As we face today’s challenges and threats, we will do well to grasp the insight that our counterparts and adversaries, like us, are searching for survival and for a future for their children. As occurred 45 years ago, that critical insight might prove to be the key to keeping us alive and secure.