This is my first post so let me know if I'm posting this in the wrong section. I read somewhere that if we are ever able to travel faster than the speed of light that fact would automatically enable us to travel back in time. I don't see how those two things are connected. Even if we travel faster than the speed of light, say 1.5c, we would still be travelling at a finite speed. Is this true, or did I misunderstand it when I read it? How does it work? Thanks.