1. The main reason for the actor to go back is to send back the camera that recorded everything, so that he, who was 7 years old at the time, could discover the contents of the camera ten years later, so that he would no longer use the time machine.
Because after he disappears, the camera is still shooting until it shows the tape is out (white tape pattern, which I guess should be a tape-out prompt), suggesting that it is all over.
2. In the end, it was found that the male protagonist of the camera was the male protagonist who grew up at the birthday party at that time, and he and his sister learned everything through the camera.
So don't worry about how many cameras there are in the end. It's useless for cameras A and B. The most useful thing is that the cameras that record everything are known to them. So:
3. The ending is an open ending, warm, tragic, and comedy: the
male protagonist tells the female protagonist that I think I will change the "world", the lines are relatively obscure, or the way foreigners speak like metaphors , has three meanings:
(1) Warm: the meaning of changing the world does not mean that you really use a time machine to change the past, it can be understood as the love destiny of the two of them, that is, they both liked each other but didn't say it, but The male protagonist has now taken the initiative to confess.
(2) Tragic: The male protagonist finds it very exciting after watching the content of the camera. He wants to try the time machine again with his girlfriend, and then it is time for the butterfly effect to start the cycle again.
(3) Comedy: The male protagonist found out that there is a time machine as an advanced thing. He felt that his girlfriend must think that this thing does not exist in reality, so he said: Come on, let you open your eyes and change your understanding of the world , and then after the two of them watched it, it was estimated that they both felt stimulated, so it was (2) again. (Personally funny, please don’t be mad)
There is also a story about why there are model cars on the wall, and the plot of the model cars they are experimenting with is filmed.
I think it's similar to Schrödinger's cat. To put it simply, a cat is placed in a box. You say whether he is dead or alive, so when the box is not opened, it is both dead and alive. In a superimposed state, Life and death can only be guesswork. Only when you open the box do you know if it's dead or alive.
The plot is that when you find the car in the wall, it exists, and when you don't find it, it both exists and doesn't exist, because you didn't find it, so you won't know whether it exists. So this part of the story is in the past.
Personal opinion is for reference only, any similarity is purely coincidental.
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