To put it simply, one person created a time machine to save the lives of his loved ones, but he had no intention of spawning two other parallel universes, two intricate and reciprocating worlds.
The atmosphere was well created, but it didn't really burn the brains. It just deliberately disrupted the timeline and the causal relationship, and used three seasons to intersperse it, so it seems a bit difficult for people with poor memory. In some places, it is superfluous to deliberately ambush the pen for a long time to reveal the mystery and create suspense (such as the scar on Trond's hand). In fact, only one season of 10 episodes is enough for this story.
About the story: Two people who should never meet and love each other keep falling in love and killing each other in two parallel universes. The man wants to end this endless pain and cycle because of love, and believes in "there will be no cycle if there is no existence. There is no pain and no joy, it is heaven", the woman would rather suffer than maintain it because of love, so that they can meet and love each other in endless reincarnation, mainly because she thinks that all this has happened in the time line and cannot be changed. (Actually, this is a bug. First, if she really thinks so, she doesn’t have to do anything, so why bother to maintain it. Second, since parallel universes are mentioned in the film, any choice can actually change things. As a result, it will just spawn one more parallel universe. But it doesn't matter, the time-travel drama itself has its own bug property.)
About Philosophy: Fate, Cause and Effect, Reincarnation. Desire is the inner driving force of destiny. "We can decide what we do, but we can't decide what we want." Humans are just a collection of many desires. Once you have desires, you will have motives for doing things. Many motives form a causal relationship, and many causal relationships form a destiny.
Regarding physical propositions: quantum mechanics, multi-dimensional space, parallel universes... all of them stop there.
About religion and theology: don't know, don't talk about it.
Last nonsense: The world we live in may just be born out of a bug, so is life meaningful? Does the bug make sense? Of course there is. There may be and only bugs that make sense. Does not exist where does the meaning come from?
So interesting things come, meaninglessness can give birth to meaning, mistakes can breed life and love, and light can shine in the dark, so bugs are the cracks that exist in everything.
Then Adam and Eve went to steal the forbidden fruit.
View more about Deja-vu reviews
