About 150,000 years ago, when language came online, we started to put words to this constant emergency, so it wasn't just, "Oh my God, there's a saber-toothed tiger," which could be, it was suddenly, "Oh my God, I didn't send the email. Oh my God, my thighs are too fat.
大概15万年前 语言开始形成 我们开始把这种持续警惕的状态用语言表达出来 不止是 “我的天啊 有只剑齿虎” 它可以突然是 “我的天 我没发邮件 我的天 我的大腿好粗