by Shen Shi'an, The Buddhist Channel, April 8, 2015
Singapore -- The movie ‘Predestination’ plays heavily with the ‘predesination paradox’, which is also known as the causal or causality loop. This is a proposed curiosity of time travel, of how Event A can cause Event B (in the linear cause and effect sense), but because of time travel, Event B can cause Event A too (in the cyclical cause and effect sense). This suggests that time travellers are not really able to change the past, since history as we know it does not change, even if time travel is a reality. Then again, if it is possible, we would not know history had changed, since it would be written differently in the ‘first’ place, without another version or memory of it for us to compare with?