From Rob Holmes
What puzzles me about the ongoing interest in time travel is the elephant in the room: free will (2 February, p 8). I have no problem with relativistic time travel in which people in speeding spaceships age more slowly.
However, travelling to the past or future via wormholes implies a 4th dimension of time in which both the past and future are physical realities – the past is still there and the future has already happened. Whatever happened to free will?
Lesmurdie, Western Australia
