Yes, increasingly sharp trade-offs, increasingly difficult communications tasks.

是的，越来越尖锐的权衡， 越来越困难的沟通任务。

He asked subjects to use the code to solve communication tasks, for example, or to pass the code on to one another as in a game of telephone.

例如，他要求受试者使用代码来解决交流任务，或者像在电话游戏中一样将代码传递给彼此。