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I probably get bashed for asking this question, sooo... I ask anyway, sorry in advance.

As any physics laymen I came from the Veraterasium Video and was left a bit puzzeled. Specifically about how time would slow down to compensate for the higher one way speed of light. I was fine with that, until he mentioned, that it even could be instant in one direction, which made me think that then there would be an infinite slowing down of the time. Wouldn't that freeze the time in one direction? And since in an infinite universe there is always a "more left" position from where you are (assuming that the one way speed of light is infinite to the left), then shouldn't your time also freeze?

Thinking further I came to the conclusion that either the one way speed of light is not infinite or the universe is not perfectly flat, but rather continuesly curved. To illustrate my thought process lets assume a 2 dimensional (in space) universe that is curved to a sphere in the third dimension. In my mind, there are only two ways of picking a prefered direction of the one way speed of light.

  1. Pick any preferred one-way direction in 3D for the speed of light and set the speed to infinite. Now there are only two (infinitly small) points on the entire sphere where the one way speed of light is infinite, thus evading the problem of a frozen universe.
  2. If however the prefered speed of light is a 2D vector on the plane, then we would run into the same problem of the frozen universe (which we obviously don't live in). Therefore the speed of light cannot be infinite.

So if those assumptions are correct and if we would somehow find out that the one way speed of light is in fact infinite in one direction, could we conclude that the universe cannot be flat?

In my mind this argumentation is logical, however I'm definitly not an expert and would guess that I am missing some important information, that's why I'm asking.

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