This is called the arrow of time.

这个现象叫做“时间之箭”。

This is also referred to as the arrow of time, which is closely related to the principle of entropy.

这也被称为 " 时间之矢" ，与熵增原理密切关联。

But how does the arrow of time lead to a theory about an entirely separate universe?

但时间之箭是如何引出一个关于完全独立宇宙的理论的呢？

If gravity does govern our arrow of time and that of another universe, what does it all mean?

如果重力确实支配着我们的时间箭头和另一个宇宙的箭头，这一切意味着什么？

So, if all the simulations point to another universe with its own arrow of time, what would it look like?

那么，如果所有的模拟都指向另一个拥有自己时间箭头的宇宙，它会是什么样子呢？

And one of the things that has been of great interest to me is what is called the arrow of time.

我很感兴趣的一件事就是所谓的时间之箭。

Then, there is the psychological arrow of time.

然后，还有时间的心理箭头。

Finally, there is the cosmological arrow of time.

最后，还有时间的宇宙箭头。

It could even account for the arrow of time that we observe.

它甚至可以解释我们观察到的时间箭头。

I shall discuss first the thermodynamic arrow of time.

我将首先讨论热力学时间箭头。

There would be no strong thermodynamic arrow of time.

不会有强热力学时间箭头。

This creates what is known as the arrow of time, which as far as know, only moves forward.

这就产生了所谓的时间之箭，据我们所知，它只会向前移动。

Once a system gets to its fully-disordered state -- its equilibrium -- there's no more direction of increasing entropy to determine the arrow of time.

一旦一个系统达到完全无序的状态—平衡态—再也没有更多增加熵的方向来决定时间的箭头了。

Generally speaking, the arrow of time describes our sense of time passing, events always seem to happen in the same order they never go backwards.

一般来说，时间之箭描述的是我们对时间流逝的感觉，事件似乎总是以相同的顺序发生，它们永远不会倒退。

I shall therefore discuss the psychological arrow of time for computers.

因此，我将讨论计算机的心理时间箭头。

But why should the thermodynamic arrow of time exist at all?

但是为什么热力学时间箭头会存在呢？

However, there are at least three arrows of time that do distinguish the past from the future.

然而，至少有三个时间箭头可以区分过去和未来。

I shall argue that such beings would have a psychological arrow of time that was backward.

我将争辩说，这样的人会有一种心理上的时间箭头是倒退的。

This would explain the existence of the thermodynamic arrow of time.

这将解释热力学时间箭头的存在。

The contracting phase will be unsuitable because it has no strong thermodynamic arrow of time.

收缩阶段将是不合适的，因为它没有很强的热力学时间箭头。