Maybe closed timelike curves aren't closed at all?

也许闭合类时间曲线根本不闭合？

In a closed timelike curve, when you travel to the past, you've always been a part of that past.

在个封闭时间曲线中，当你回到过去，你就过去部分。

Without getting into too much detail, a time machine like a Tipler cylinder could create a closed timelike curve.

简单来说，像提普勒柱体这样时间机器可以创造出个封闭时间曲线。

We don't understand quantum physics enough to know if these closed timelike curves could or couldn't exist.

我们对量子物理学了解还不够，不知道这些封闭时间曲线否存在。