Okay. Time travel. What happens if you go to your past and kill yourself? If you are already dead, you goes back to the past and kills you in the first place? Since you are already dead, you could not have time traveled and killed yourself, therefore you are not dead. If you are not dead, then you went to the past ans killed yourself. The time travel would violate the causality of time, i.e, causes must come before the effects. However, it is not necessarily a problem: if you did kill yourself, you'd have been dead anyhow, and life would go on without you in the future. You are dead, and that is it.
However, imagine the benefits of time travel to space travel. The time lag between earth and Pluto(the former planet) is about 8-10 hours. So if astronauts in Pluto sent a message home, it'd take 10 hours to reach Earth, and the reply'd take 10 more hours to get back: a 20 hour delay. That's a big frikkin problem.
Now, we have a time machine. Suppose earth is to send a message. The communicator goes back 20 hours to the past and broadcasts a message. In the present, the command center gets the reply because 20 hours delay is over--for anyone in the present, the communication was instantaneous. From the point of the astronauts: they receive a message. To avoid the time lag, they too go to 20 hours into the past and broadcast the reply. So, in the present, they receive the reply from earth as soon as they receive the original message, and have sent their 'reply'. This could go on and on and on. The communication would appear to be instantaneous to those involved, but in reality there would be a lot of background inter-temporal communication going on. Technically, your message is traveling at or faster than the speed of light. And that is not possible. You cannot cheat time, or Einstein's limit of C.
How that works, don't ask. No, not because I don't know, of course I know, you dumbass, otherwise why would I write, okay, so I am not pretending to know okay, unlike you, you poser, but maybe I just want to blog the answers in another post, or how does NEVER again sounds, cuz'you have pissed me by asking stupid stupid questions, and now I am not in the mood to give answer to such interesting and important questions anyway, all because of you. So, go away, k? And don't bugger me ever again, or I am calling the police, who, admittedly cannot do much, especially if you know someone ''big'', instead they might end up arresting me instead, but Meh, whatever, amirite?
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