Obviously wearing a sci-fi coat, but it completely violates the principles of sci-fi. It’s okay to mix parallel space, time axis, and four-dimensional space. The funniest thing is that after the space collapses, not only the matter in the space, but also her carry. It still exists. The reason for the collapse of the space is also suspected of fooling the audience. I think it is not a paradox but the director can't explain it, so it collapsed. As for the pile of liquid after the collapse, it is completely unknown, let alone that the substances that create different dimensions are just such a pile of objects. There are also organs in each room that are not quite right. For example, the Rubik's cube model is still three-dimensional (look at your screensaver, it is the same), and if it is four-dimensional, there is only one fourth dimension. If there is space Changes will not produce changes in time, and the director obviously shows the change of time when showing the transfer of space (such as the instantaneous transfer of characters) (I want to have two rooms with different time speeds, some fast and some slow). But it can’t be explained by parallel space. There will be no intersection in parallel, so there is no such thing as seeing two selves in different realities. There are many flaws.
In short, compared to the first or three films, which honestly developed the Rubik's Cube model and explored philosophical human nature, the second film, the director wanted to make it more sci-fi, but it was like a fantasy. suspicion.
The above are just personal opinions, if you have different opinions, please be moderate.
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Cube²: Hypercube reviews