Now just as we're getting to grips with time's weirdness, one daring physicist has dropped another bombshell. "There isn't just one dimension of time," says Itzhak Bars of the University of Southern California in Los Angeles. "There are two. One whole dimension has until now gone entirely unnoticed by us."….it gives the green light to the idea of time travel. If time is one-dimensional, like a straight line, the route linking the past, present and future is clearly defined. Adding another dimension transforms time into a two-dimensional plane, like a flat sheet of paper. On such a plane, the path between the past and future would loop back on itself, allowing you to travel back and forwards in time (see Diagram, page 39). That would permit all kinds of absurd situations, such as the famous grandfather paradox. In this scenario, you could go back and kill your grandfather before your mother was a twinkle in his eye, thereby preventing your own birth.
12 Responses to “Another time dimension?”
Leave a Reply
You must be logged in to post a comment.