Chronological Protection

[Dubbelosix]

Hawking never gave a mathematical account of his chronological protection and no one so far has given a reasonable account that I am aware of to assure the chronological protection.. so here is my take on his idea. 

 

 

The key to forbidding time travel may have to do with causally related systems. For instance, If two events are timelike separated, then an object can travel from the former event to the latter event with a velocity v<c. In a space-like interval, an object can be present at both events only if it travels at a velocity v>c. That is, a spacelike separated object could only travel from the former to latter point by exceeding the speed of light. Since this speed is non-physical with ordinary matter, the two events will not allow itself to be causally-connected. Only those timelike systems, are causally-connected; perhaps Chronological Protection (as named by Hawking) is based on such principles, perhaps only causally-connected spheres are allowed to time travel, those which are spacelike, do not and could not, effect the causal structure of the universe.