The screenwriter cuts a positive sequence of plots into multiple fragments. The length of the fragments is theoretically limited to the length of the instantaneous memory, because only within this length can the protagonist act rationally. Then expand the fragments one by one in reverse order. (The initial memory is also sliced and mixed in the fragments of the momentary memory.) What the audience has to do is to use their normal memories of each fragment to reconstruct the plot in a positive sequence. It's as simple as the reversed image of the eyes coming straight up. The sense of achievement and the illusion of omnipotence brought to the audience by this simple memory gymnastics can partly explain the various praises for the film.
In the momentary memory segment at the end of the film, TEDDY overturned the protagonist’s initial memory, so the original me, the initial hatred and all the meaning of the film were dispelled, and the film became a boring brainwashing game for the screenwriter to play (Manipulate) the audience, that is Your personality, your memory, and your motivation are all what I told you-for the male protagonist, and the same for the audience. This is a flimsy audience film, and the omniscient and almighty God is actually a puppet.
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