关于时间你不可不知的十件事

4. You live in the past.
4.我们活在过去。

About 80 milliseconds in the past, to be precise. Use one hand to touch your nose, and the other to touch one of your feet, at exactly the same time. You will experience them as simultaneous acts. But that’s mysterious — clearly it takes more time for the signal to travel up your nerves from your feet to your brain than from your nose. The reconciliation is simple: our conscious experience takes time to assemble, and your brain waits for all the relevant input before it experiences the “now.” Experiments have shown that the lag between things happening and us experiencing them is about 80 milliseconds.
准确地说，是活在80毫秒前。用一只手碰碰你的鼻子，同时用另一只手去碰你的脚，你会觉得这两件事是同时发生的。但这正是不可思议之处——显然，信号从你的脚传到你的大脑应该要比从你的鼻子到大脑花费更多时间。不过这一点很容易弄明白：我们的意识需要时间来收集信息，而大脑要等收集到所有相关信息之后才能体验到“现在”。实验表明，从事件真正发生到我们的大脑体验到事件的发生，中间大约有80毫秒的时滞。