“Time and/or distance” needs to be completely removed from the perspective. They can jump into a portal anywhere in the universe, choose a time and place on the other side of the universe and exit from a portal there. Time and space is selective and the entering and exit of these portals can happen in just minutes.
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A similar idea was posited by James Clerk Maxwell in the 19th century in one of his 200 quaternions (special field equations). Maxwell also unified the theories of electricity and magnetism; he also advanced Kinetic gas theory, took the first color photograph, developed ways to analyze stress in a structure, and even laid the foundations of cybernetics.
A self-taught mathematician who lived with his mommy, Oliver Heaviside was disgusted by Maxwell’s’ field equations, calling them abominations, threw out all but 4 and converted those 4 to vector equations - giving us all we know of about the entire electromagnetic spectrum.
Thank you for sharing that. :)
Maybe Heaviside should not have scrapped it all and we would be a millennium ahead by now...