Many defenders of the possibility of time travel into the past also hold that such time travel places no restrictions on what said time travelers can do. Some hold that it places at least a few restrictions on what time travelers can do. In attempting to resolve this dispute, I reached a contrary conclusion. Time travelers to the past cannot do other than what they in fact do. Using a very weak notion of can, I shall argue that the correspondingly strong cannot do otherwise applies in the case of backwards time travel. I defend this result from objections.

中文翻译：

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时间旅行者（和其他人）别无选择

许多支持时间旅行回到过去的可能性的捍卫者也认为，这种时间旅行对时间旅行者可以做的事情没有任何限制。一些人认为，它至少对时间旅行者的活动设置了一些限制。在试图解决这个争议时，我得出了相反的结论。回到过去的时间旅行者只能做他们实际上所做的事情。使用非常弱的“can”概念，我将论证相应的强“can”概念也适用于向后时间旅行的情况。我捍卫这一结果，反对反对意见。