The world we live in now is familiar to everyone and can be said to be "spatio-temporal". In this world, each of us has roughly the same (at least very similar) time system. We come from the past and live in the present, so we can infer and predict our future to some extent. On the plane defined by the time axis, the differences among people, people and things are basically physical. In addition to the differences in length, width, high volume, density and mass, another important difference is that our spatial position on this plane is different. From the basic geometry, we know that a straight line can define infinite geometric planes with this straight line as the axis. If we connect with the physical hypothesis of multiple universes, then we can say that a plane can be understood as a universe defined by a possibility. Thousands of "parallel" universes formed by thousands of different possibilities are all based on the same time axis. No matter which world we are in, we all come from the past, live at a certain point in the present, and go to the future without exception. If we describe the multiverse world we live in with the mathematical language of pixels, we can imagine a super projector projecting the shadows of all objects in the real three-dimensional world (mathematically called "mapping") onto a plane curtain called "original space", and the edge of this curtain is a time axis with only one direction; The multiverse can be understood as all similar curtains emanating from this axis. If these curtains are dense enough, from a distance, they will form a cylinder with the time axis as the central axis. Of course, this "cylinder" has no upper or lower bottom or periphery, because we don't know the beginning and end of time, and we don't know the edge of the universe and where our living space is.

Now, according to the novel hypothesis in Chinese New Year, suppose there is an alternative world with time as its face and space as its axis. What would it be like? In a limited space, creatures living in this world will see the past, present and future of each individual in space. This situation is a bit like a fairy tale in which a capable person can know the past, see the future and overlook the whole history. It is amazing. If the time plane exists, then the unidirectionality of time we understand now will be subverted, because on the same plane, starting from the same point, the feasible direction should be divergent in all directions, so the creatures living in this plane space must have the ability of "time travel".

In this case, if space is the axis of time plane, how to explain various cosmological hypotheses closely related to time and space in this new world? I don't think Leonardo will be the first science fiction writer to put forward such a hypothesis, but he explained the relationship between them simply and clearly with very vivid means and traditional folk fairy tales in China. This is related to the original multiverse hypothesis, because space is non-unique, or every probability possibility can be understood as a single space, then the space that becomes an "axis" cannot be as single as when time is an axis; At the same time, because each space can only have one time clue, at least according to the current physical theory hypothesis, there can only be one time plane with a certain space as the axis. From this, we can imagine that the overall state of this world with space as the axis and time as the surface should be flaky and layered, just like a pile of paper. Of course, "slice" and "slice", "layer" and "layer" are closely related, and there is no gap between real papers. In mathematical language, due to the continuity of the probability equation that determines the spatial position, these flaky worlds composed of "slices" and "layers" are actually like the same pile of infinitely extending "paper blocks", which are fully compressed and completely integrated. Of course, this "paper block" is not three-dimensional like the block object we understand, it is boundless, unless the newly developed physical hypothesis can measure the width of the "paper block".

Do you think, in theory, my understanding is a complete fantasy or a hypothesis that may be proved in the future?

thank you