Reciprocity teaches us why win-win relationships are the way to go, why waiters leave candies with the bill, why it’s a good idea to use the least force possible to secure an outcome, and why a lot of companies don’t permit their employees to accept gifts. This model demonstrates why we should view giving as being as valuable as having. It prompts us rewrite the Golden Rule to say, “Do unto others knowing that something will be done unto you.”
