我们知道他们在说谎，他们也知道自己在说谎，他们也知道我们知道他们在说谎，我们也知道他们知道我们知道他们说谎，但是他们依然在说谎。

知道有鸡巴用

沒有撒謊, 因為死於基础病不算在內,哪只死5人不足為奇

Common knowledge is a special kind of knowledge for a group of agents. There is common knowledge of p in a group of agents G when all the agents in G know p, they all know that they know p, they all know that they all know that they know p, and so on ad infinitum.[1] It can be denoted as {\displaystyle C_{G}p}{\displaystyle C_{G}p}.