I don’t mind non-local formula as long as they don’t allow the sending of faster than light signals by humans. I always kind of want the speed of light to be like the speed of a glider in the game of life.
But you can send signals faster than the glider. They only move at c/4. There are spaceships that can move at c/2, and fuses and wicks that can move at c.
Unlike our universe, the refractive index of non-vacuum parts of lifespace is less than 1 wrt vacuum. c/2 is the orthogonal speed of light in vacuum, and c/4 is the diagonal speed of light in vacuum.
I don’t mind non-local formula as long as they don’t allow the sending of faster than light signals by humans. I always kind of want the speed of light to be like the speed of a glider in the game of life.
But you can send signals faster than the glider. They only move at c/4. There are spaceships that can move at c/2, and fuses and wicks that can move at c.
Unlike our universe, the refractive index of non-vacuum parts of lifespace is less than 1 wrt vacuum. c/2 is the orthogonal speed of light in vacuum, and c/4 is the diagonal speed of light in vacuum.