At the end of the film, I haven't forgotten to give a brick to the parallel world theory.
I think parallel worlds exist, and there must be infinite parallel worlds.
Countless parallel worlds constitute four-dimensional space-time.
Because the world as we know it is three-dimensional, it is difficult to understand four-dimensional space.
But it's easy for us to understand one and two dimensions that are lower level than ours.
A dimension is a line that contains an infinite number of points.
2D is a plane that contains an infinite number of lines.
Three-dimensional is the space in which we live, and there are countless two-dimensional planes.
By analogy, the four-dimensional space of course contains countless three-dimensional spaces, which are the so-called parallel worlds.
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