Dry goods first, I personally think that the routine is as follows:
Male protagonist's perspective: (explosion n ~ investigation) ~ crossing ~ (rescue failure ~ male protagonist death ~ explosion n+1 ~ investigation) ~ crossing ~ (successful rescue ~ male protagonist death ~ no explosion)
The heroine's perspective: (explosion n ~ the heroine dies) ~ crossing ~ (failed to be rescued ~ explosion n+1 ~ the heroine dies) ~ crossing ~ (successful rescue ~ no explosion ~ the heroine lives)
----------------------Dividing line----------------------
Each of the brackets represents a time and space, and each time travel (big event) creates a new parallel time and space (the theory of the female scientist in the movie), and each time and space has a male protagonist and a female protagonist.
The movie starts with the explosion of n+1. Other comments have discussed it. Various details show that the male protagonist must have crossed many times, but he has failed. Please open your mind.
Note: The male protagonist who died in each time and space is from the previous time and space.
The key to this theory is that the male protagonist enters a new time and space every time he travels. This precondition is not derived from rigorous reasoning of the plot, but is artificially added by me, because this is the best way to explain it.
View more about Deja Vu reviews