Cause of misjudgment № 9
Reciprocation Tendency
We feel a strong urge to repay favors, concessions, and hostility in kind — which can be triggered deliberately to extract things we'd never otherwise give.
Humans are built to return favor for favor and blow for blow. Reciprocation makes cooperation possible: I help you, you help me, and society runs more smoothly than it would among pure self-interested strangers. The same reflex applies to hostility — an insult or an attack pulls a counterattack out of us almost automatically — which is why feuds escalate and why a small slight can spiral into a war.
The danger is that the favor side can be weaponized. The Hare Krishnas figured this out: pressing a flower into a traveler’s hand at the airport, then asking for a donation, dramatically raised giving, because the unwanted “gift” created a felt debt. The same lever sits behind the free sample, the small initial concession in a negotiation that pressures you to concede back, and the lavish dinner from a salesperson. None of these gifts is really free; each is engineered to switch on your reciprocation reflex.
Munger’s advice was not to refuse all kindness, which would make you a worse person, but to recognize when a “gift” is actually a sales technique and to mentally separate the favor from the decision it is meant to influence. Cialdini, whose work Munger admired and credited, documented the same mechanism at length. The defense is to accept that you can take the flower, or the free lunch, and still owe the giver nothing on the real question.
