Originally, I always thought that it was when it came from a comet that the time and space split, but when I thought about it carefully, I suddenly realized that something was wrong.
In the so-called "perfect space", it was mentioned that the original Em's chief position will not be replaced, but in the perspective of Em, who we have been following, she missed this opportunity, and this event was long before the comet came. It has already appeared, indicating that the point of space-time splitting is far before the comet, and the box of space-time has already existed. The comet is more like a transit point. On the night the comet came, countless parallel space-times were all connected together.
I thought that after the comet disintegrated, time and space would collapse, and in the end, only the cat would be dead or alive. After the intruder Em woke up, all the peaceful behavior seemed to confirm my conjecture. However, the phone call at the end of the film And the way Kevin looked at Em clearly implied that there was another Em.
It can be seen that the arrival and disappearance of the comet has nothing to do with the existence and opening of the box. The box has already existed, and the disintegration of the comet does not mean the opening of the box. The box is still there, space-time has not collapsed, and the superposition state still exists. Thought the end, maybe just a small fragment of another story.
And who can guarantee that the boxes will only overlap this time? Em in the "perfect space" may not really be a perfect existence. Perhaps, she is also an intruder from another time and space.
As said in the film, we are always worried that there will be a dark side of ourselves to kill us, but who knows that we are not the existence of the dark side?
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