(time travel)i watched a programme on the subject proving the possibility of going back in time if only ....?

Question

we could go fast enough,time would slow then stop then reverse,so if i invented a way to travel back in time then went back in time and shot myself dead before i invented it how would i then invent a time machine to go back in time to shoot myself ?TRY AND ANSWER THAT!!

Answer 1

If you were to go back in time, which will be possible soon, no doubt, and attempted to kill yourself, the results would cause a paradox, like mentioned above, and a paradox involving the space-time continuum would cause a catastrophe, forcing time backwards to a focal point where the paradox had yet to occur, or perhaps back to the Big Bang itself. Of course, I speak in theory, but anyways, time is a living thing, you can not see it, hear it, smell it, or feel it, but in order to protect itself from this paradox that would force it back, something would go wrong.

Think of it this way, if somebody bigger than you (a paradox) beat you up, and you knew you could go back in time and prevent that, you would, which is what time would do in defence.

So, this would occur, time would go back, and the natural course of life would lead back to this point. Now, Time actually remembers what happened, so something would go wrong when you tried to kill yourself. You would chicken out, the gun would mis-fire, somebody would save you before you were killed, time would fix things so that nothing would be harmed. Thus, restoring the natural order of things.

Even if you had yourself cornered with a sharp knife in a dark alleyway in an abandoned town with nobody around to help, you would have a heart attack, a stroke, or something that would kill you or knock you out, even if you were in perfect health for time to defend itself and everything else.

I hope this answers your question.

Answer 2

Grandmother paradox, Donna? What a delightful feminist humour. Kolorado King explained it pretty well with the branching (and what has branches if not a tree) analogy.

I keep reading about this idea of time travel, if you go faster and faster and faster you could hit lightspeed and time would stop - then if you go faster time will go backwards! Well for a start you cant reach lightspeed because accelerating anything with mass, including something as small as an atom would require infinite energy which does not exist. The more energy was pumped in the closer you'd get to lightspeed but also your mass would increase making further increases more and more difficult. This is part of Einstein's special theory of relativity and its why c is the cosmic speed limit. You cant accelerate faster than that to go back in time. Period. There may be other methods to go backwards in time.

I'd like to point out the fallacy in people saying time travel is impossible because of the pardoxes involved - as a logical argument it amounts to 'it must be impossible because i cant personally see how it would work'.

If you go back in time and shot yourself dead you would not fade from any photographs or disappear in a cloud of paradoxity. Your other you would die and you'd be arrested for his murder as his evil twin or clone or whatever. You'd still be there because you are not from that universe anymore you're from the one where you made the time machine, you entered the parallel (actually perpendicular but lets not get technical) timeline by altering the past. If you escape from jail and got back toyour time machine you could go in to the future, but you'd still be dead. It would be the future of the timeline you were in - and there would in fact be no way to get home.

There, I think I answered that.

Answer 3

It is impossible to change the past. The way i think of it, if time travel is possible thenit means that you also have to bring in the idea of destiny, and that everything has happened, is happening and is going to happen, and you cant do a god damn thing to stop it! its like a book, you can open it up on what ever page you want (therefore traveling through time) but you cant change the what happens in te story. However this would then mean that none of us have a choice in anything we do and that the choices we 'make, we have already made. That choices are simply an illusion; which quite frankly is really depressing, so i prefer to say that time travel is impossible.
Which it is. Technically, if you travel at the speed of light around the sun and back, you should arrive before you left, but as it is impossible to travel at the speed of light, this means that time travel is impossible.

Answer 4

if you made a time machine that let you travel back in time then you would probably not go back to a time before the machine was invented because if you did then the time machine wouldnt exist and you therefore would have no way of entering that time without the machine.Meaning that if you did build a time machine and waited for say a week, then you could only travel back a week

Answer 5

perfect question my man. and you know what I've got an answer. There are two forms of theoretical time travel. In one you can go back and if you mess with one little thing it will send everything into a paradox and the entire world may end. But in the second one what you do in the past doesn't affect you. You are alive when you do it so that's it. Think of it this way. Your life is a limbless tree. You go back to the middle of your tree. When you do you cut it in half. At that's moment when you do it sprouts a limb. Therefore your new life goes from there. So yes you died but now you have a whole new life. I hope that I explained that right. Good luck.

Answer 6

There is no answer to that - it's called the "Grandmother Paradox" - in other words, what would happen if you went back in time and accidentally killed your grandmother in her pram, thereby cancelling out your own existence.

This isn't just a puzzle, it's a genuine scientific conundrum. Most scientists feel that either a) the universe would somehow prevent you from being able to do this, ie you could only observe, never interact or b) that if you did the thing you describe, you would slip into a parallel universe where it is entirely possible to kill yourself before your own birth.

Remember, our understanding of how time works is purely based on our experiences within our own universe - in a different one, who knows what may be possible.

Answer 7

Traveling back in time is impossible because many paradoxes arise, one of the most famous being the following: "Suppose you traveled back in time and killed your biological grandfather before he met your grandmother. As a result, one of your parents (and by extension, you) would never have been conceived, so you could not have traveled back in time after all. In that case, your grandfather would still be alive and you would have been conceived, allowing you to travel back in time and kill your grandfather, and so on. Thus each possibility seems to imply its own negation, a type of logical paradox".
What you said about shooting yourself is another paradox that prevents you from travelling back in time.....because just like the grandfather paradox, if you went back and killed yourself before you made the machine, then the machine would never have been made in the first place and you never would've gone back in time to kill yourself. Therefore you would still be alive and in fact make the machine, and so on.

Not only that, but you cannot accelerate an object to more than the speed of light that initially started with a velocity less than the speed of light. You can't even reach the speed of light, Special Relativity prevents that. So not only can you not travel back in time, you can't even stop time.

Answer 8

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Answer 9

My theory is that time travel is, or will be, possible, but you can never travel back further in time than the point you originally left from. This means that you can travel forwards in time as far as you like, and return back to the point you left from, and you can go anytime in between, but you can never go back further than your starting point. This gets rid of most if not all of the paradox problems about killing your grandfather and all the rest, gets rid of the theories about multiple parallel universes that split off at every conceivable point in time and explains why no-one from the future has appeared at any time in our past or present. They can't travel back further than the point they started from, which is sometime in our future. (!)

Answer 10

What ever you do is already done and can never be changed.
Every breath you take and every move you make changes our existance in some way.

Imagine that your existance is a crossroads, you decide to go left. From then on your existance is in the left path. You can turn around and go back but you cannot undo the time that you spent in the left existance. You can cirlce around and come back to the crossroads and decide to turn right but it will not change the time that you spent in the left existance. Every second of our lives we made choices that create our own existance which usually change or determin other peoples choices and therefore existance.

Going back in time does not change any event that has already happened, it just creates a new existance.