you people must have heard of this. anyway my friends and i had an argument over this. the thing is...... suppose you go back in time and kill your grandfather before he met your grandmother, what will happen to you? my friends were saying you'll disintegrate or some rubbish like that. i think you won't exist in that time dimension whatever, in which you murdered you grandfather. nothing will happen to you when you kill him, you just won't exist in that time thing. i'm not sure if this is right or not. if this could really happen, what would happen?
given we can only assume no one has ever done it, we can't say for sure. my opinion is that you will fail. for you (the person who is going back in time), your grandfather was not killed. so if you go back in time (ie, back along the timeline/dimension in which you exsist), then you end up in a time frame which for you has already happened. so back whe it happened the 'first' time, you were there. to add you into the scene would mean that you were no longer in the same time line. So you have already tried to kill your grandfather, and since you now exsist, you obviously failed in your request. It has already taken place. To chjance history is to move yourself into a different dimention, *not* back in time. back in time is the past for you, and your past has already occured. but I could be wrong Please Register or Log in to view the hidden image!
Either you go back, kill your grandfather and nothing spectacular happens, or you wake up from a weird dream realizing it's actually impossible to travel backwards in time because of the paradox.
There was once a cute SciFi story about the first experimental test of a time machine. Unlike some stories, this was more realistic. None of the scientists were to take the first time trip. A little cube of steel was to be sent back one hour in time. It would be inscribed with identifying data. The experiment was scheduled for noon. At 11AM, While the scientists were waiting for the little cube to be delivered from the machine shop where it was being inscibed, a little cube appeared in the time machine. One of the scientists elatedly called attention to the cube, which indicated that the test had been successful. Then they decided to perform another experiment. They called the machine shop and gave instructions to put the cube being worked on into an induction furnace and melt it, making it impossible for the cube to be put into the time machine at noon. They wondered what would happen. There is a shift of scene, and some ET's are discussing the stange parallel universe they just discovered. Nature does not like paradoxes.