But then, and here's the trick, Fehr and Gachter said, on the seventh round, they told people, "You know what? New rule. If you want to give some of your own
Pero entonces, y aquí está el truco, Fehr y Gachter dicen, en la séptima ronda le dijeron a la gente, "¿Saben qué? Regla nueva. Si quieren dar