It is worth to note that systems with preferred system of coordinates and "flowing" time can have Lorentz symmetry (for instance see https://physics.stackexchan

It is worth to note that systems with preferred system of coordinates and "flowing" time can have Lorentz symmetry (for instance see https://physics.stackexchange.com/questions/887/relativistic-cellular-automata https://physics.stackexchange.com/questions/887/relativistic...) so relativity doesn't tell us about time travel as much as we might hope