To be sure, this little J is not the original little J. She came back from time to time. The weird smile does not match her age. Some comments have pointed out.
What is she here for? There are comments that the three of them keep creating countless parallel spaces. I don't understand such a profound space theory. I just think that Little J is the victor who has the last laugh. He travels back and forth, and when Big J is dead, Little J's purpose is nothing more than survival or love.
If this can already explain why Little J wants less dolls, some people say that it is a metaphor for Big J, and some people say that it is a metaphor for some kind of reincarnation or cycle. Burning dolls or laughing weirdly is just a simple act, and shouldn't have an impact on time travel (regardless of all the crazy thoughts of adults after seeing this kind of behavior).
Going back to the existence or love I mentioned before, in this ending, big J lost love and survival. SAM feels guilty all his life. Although he survives, he will affect little J's survival and love. It can be deduced from this little J's crossing back. Out, she came back for survival or love. Personally, I prefer survival. In the end, SAM realized something when he woke up in the car and called Xiao J's name. It is certain that Xiao J is the beginning of a new reincarnation of the butterfly effect.
The so-called new reincarnation may be a new fire. For the sake of love, SAM will or finally affect the survival of Xiao J, and if Xiao J is to survive, SAM will die.
I don't think Little J will evolve to be able to travel to before being born and set fire to kill Big J, she should only be able to affect the whole main line in the main line after her birth. I don't know how many people have seen the infinite loop in "Terrorist Cruise" and can borrow it to explain it. It should be one of the SAMs who chose to go back and set the fire. As for which time and space SAM is, I have limited brain power and cannot make a more accurate analysis.
I think the two arguments of the fairy under the moon are very reasonable deductions.
"Fifth, according to the landlord, it's actually caught in an infinite loop, that is, the protagonist, his sister, her daughter, and the three of them are constantly creating new parallel spaces--.
Sixth, I think there is definitely something wrong with that old man, old man. It's not easy, he has definitely traveled more times than the protagonist, but he is more cautious and nothing major happened, but from his incoherence and amnesia, and the prophecy that the protagonist will be thrown on the street (let's say so), we can see that he is definitely not simple. , at the end of the film, it doesn't explain why the old man was killed by the protagonist's sister. The old man is a good friend of the protagonist. Got it. In the end, the mysterious problem of the protagonist's daughter is absolutely inseparable from the old man!"
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