At least not long enough to develop time travel?
2007-03-11 22:34:25 · 24 answers · asked by Barbara Doll to you 7 in Science & Mathematics ➔ Astronomy & Space
That's a good observation, and one I hadn't considered before.
If it's true and mankind dies out before inventing time travel, does that still make time travel impossible ? Probably not.
We shouldn't worry either, it may be that time travel is such a difficult thing to discover that it wouldn't be discovered for another million years anyway. Maybe mankind will survive another 999999 years yet then !
One other thought though, maybe it's the discovery of time travel that destroys mankind ! Maybe someone will discover it and build a time machine and the first time it's turned on the entire universe ceases to exist ! Who knows ?
2007-03-12 02:19:05 · answer #1 · answered by Timbo 3 · 2⤊ 0⤋
The best time-travel machine that would probably work is a wormhole. Imagine that space is a sheet, and a wormhole is a hole punched through the sheet from one place to another. Now, if you could move the ends of the wormhole around... take one of them on a tour through the galaxy! If you go at relativistic speeds (really really fast!), time slows down. Then you take your end back home, and you've got a wormhole that can take you back through time.
The problem with this is that it can only take you back in time, or forward through time, a set amount. And it wouldn't take you to any time before the creation of the wormhole. So if this is what time travel would be, we couldn't see anyone from the future until we invent time travel!
2007-03-11 22:59:33 · answer #2 · answered by Alex 2 · 2⤊ 0⤋
Any responsible time traveller would be taking great steps to blend in and not make their presence known so as not to alter any timeline or the future - kinda like Michael J Fox in "Back to the Future". There's probably some kind of New United Nations Resoultion in the year 2207 governing time travel and the whole thing is extremely tightly regulated.
That's not to say there wouldn't be rogue time travellers out there, whose only aim in life is to travel back in time and stack the deck firmly in their favour by buying up stocks and shares in internet companies like Microsoft, Amazon, eBay, Google and MySpace. That's what I'd be doing - using time travel for personal financial gain!
What else is it good for? LOL!!!
2007-03-11 22:47:39 · answer #3 · answered by Mental Mickey 6 · 1⤊ 0⤋
Travelling backwards in time is not possible according to the laws of physics as we currently understand them (unlike travelling forwards in time which is just a fact of life- we are all doing it at the moment). So it may be that our current understanding of the laws of physics is completely correct, and that it is impossible for future "time-travellers to reach us.
Considering that governments aren't taking global warming seriously enough, its also possible that you are correct and we're not going to last much longer.
Who knows. We'll just have to wait and see.
2007-03-12 01:38:53 · answer #4 · answered by Spacephantom 7 · 1⤊ 0⤋
Well apparently, time only changes when you in your time zone( theory of multiple universes ) when you get to the time zone that gos back and changes something in the past and at that your memorys will change and unless you were in on the time travel plot you will never notice anything changed.
If time travel happened in the future the effects may have been adverse and they could go back and make the time travel never happen and thus we never find out.
2007-03-11 22:41:07 · answer #5 · answered by Gentleman 2 · 1⤊ 0⤋
It could just mean that it is impossible to do. I don't think that if there was a time traveller from the future anyone would believe him unless he brought some evidence with him. I would think that would seriously mess up the future if you brought a playstation 26 to show everyone and examine.
2007-03-11 22:52:12 · answer #6 · answered by SR13 6 · 1⤊ 0⤋
How do you know you've not met one? If any future race were to travel back to our present day they would take great efforts to make no impression at all and to blend in.
Standing out would alter the time line - if the great event of a time traveller arriving meant that 2 people didn't go on their planned date, didn't get togather, didn't get married and have kids - what if that kid that would have been born was the time traveller himself? Paradox?
No, they'd stay well hidden.
2007-03-11 22:39:26 · answer #7 · answered by The Wandering Blade 4 · 1⤊ 1⤋
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2016-12-18 20:36:26 · answer #8 · answered by sheck 3 · 0⤊ 0⤋
If by "time traveller" you mean someone who can move through time the way physical objects move through space, you're falling prey to a popular fantasy about the nature of time. Blame science-fiction writers for this misconception. Time is based on observation and measurement of the movement or behavior of objects in space. It's a measurement. The convenience of thinking of time as a "dimension" in theoretical physics has led to people imagining that it can be moved through as though it were like the space it measures. There's no reason to believe this, people just want to believe it. Don't worry ;)
2007-03-11 22:46:15 · answer #9 · answered by kozzm0 7 · 2⤊ 1⤋
If we were to see a time traveller from the future how would we recognise them? For them to not alter our time continuum and therefore not get themselves erased from history they would have to be really careful when visiting us and make sure that they didn't stand out in any way.
2007-03-12 03:51:42 · answer #10 · answered by Andi 1 · 0⤊ 0⤋