A typical parallel universe commercial.
But if you think the happy ending is a bit cliché, you're wrong. Because of the famous "grandmother paradox" in parallel universe theory, simply put, you can't go back in time to kill your grandmother. Because this will fall into a paradox - if you kill her, there will be no father, and there will be no you. Then, you can't go back and kill people either. The film doesn't (and probably doesn't dare) challenge the grandmother paradox. In fact, the male protagonist (let's call it World A) time-travels, but he does not go back to the case before the case in this world, but before the case in another parallel world (let's call it World B). Then the male protagonist from world A rescued everyone on the ship in world B and died in the line of duty. And the female protagonist of world B survived, and the male protagonist of world B naturally did not die, but just looked confused. In this way, we finally had a meaningful conversation with the hostess in the car. Of course, there is an even more exaggerated possibility, that is, when the male protagonist solves a case in World A, every time he performs a data crossing (it’s really hard to find a name, let’s call it that, anyway, people or things haven’t passed, just staring at the screen” In the past") he entered different parallel worlds, such as world B, world C, world D... and his last act of saving the heroine may have happened in world N (whatever it is, the ghost knows which one is the first )inside. As for World A, I'm sorry, the crime has already happened, and hundreds of people have died, and even God can't do anything about it, because even God can't perfectly answer the grandmother paradox. Or maybe God has his own way, just looking at all the living beings who are trying to change their destiny, laughing and not saying a word.
It has been said that the end of science is philosophy, and the end of philosophy is religion. Who knows that the ultimate quantum physics will not lift the veil of God? (This sentence is my nonsense, just take it as a feeling)
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