And so this creates a kind of social competition and a kind of upward shift in the amount eaten by each individual in the group.

这就产生了一种社会竞争，使得群体中每个人的食量都在上升。

Along with tang ping, or lying flat, it has become an anti-rallying cry of sorts for young people tired of social competition and feeling hopeless about the future.

和“躺平”一样，成为了厌倦社会竞争、对未来感到绝望的年轻人的反战口号。

In fact, a 2009 study on the skulls of human ancestors found that social competition was a primary driving force for the evolution of human brains.

事实上，2009 年对人类祖先头骨的一项研究发现，社会竞争是人类大脑进化的主要驱动力。