2007-02-14 11:53:56 · 10 answers · asked by Kentucky Dave 6 in Science & Mathematics ➔ Astronomy & Space
If someone came from the future they would not be allowed to interact with anyone. If we found out about time travel from a future traveler that would change the future and the person would never have come back in time when he did.
2007-02-14 11:59:41 · answer #1 · answered by Barkley Hound 7 · 0⤊ 0⤋
You'd think we would, or atleast those who would come in contact with the time traveler. It gets confusing though, does the future need the past or does the past need the future. For example, if we already knew, would mean the future already happened, and if time travel was possible, could do the bill and ted trick by remembering for years on a certain date and time what to do. For example write down and keep a log, and a place where you'd never forget that 2 minutes prior to when you wrote this down, you would have left a letter at your door, and it should be there.
Or since the future hasn't come yet, do you have to wait until you can do it, and then when you do travel back in time to do that, you create an alternate dimension where yourself will have experienced that, or all of a sudden your memory changes to having got that letter.
As you see many variables.
2007-02-14 19:59:40 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Actually even if it was possible to build a time machine(which it isn't) but even if it was the machine cannot go back in time farther than its point of creation. This is because the very moment the time machine goes past the point where it exists in time it ceases to exist. After all like you say, if time machines were invented why arn't there visitors from the future helping us progress at a way faster rate. Basically common time travel theory states that we would have to go faster than light to travel back in time(again impossible), so lets just say that due to some crazy physics we don't need to achieve faster than lightspeed travel to go back in time. Even if that were to happen as we travel back we would "deage" this would mean that the farthest back the machine could travel is to its moment of origin and its moment of destruction. Also this proves the grandfather paradox impossible. And third even if you overcome all these obstacles and manage to travel back in time you would still not know it because the moment you change anything in the past a new seperate timeline is created, this means that from the moment that time was altered two timelines would exist, one where the change occured and one where the change didn't. So who knows it might have already happened but we are existing in the timeline where there was no change. Anyway thats my explaination.
Oh and as a side note during time travel we would have to decide wether or not fate is predetermined or by choice, see my question to answer that.
2007-02-14 20:05:19 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Yes, because travelers from the future would be visiting us today, which is the past for those future travelers.
However, as some above pointed out, there is a theory that says time travel may be possible with the limitation that you cannot travel farther into the past that the moment the time machine was built. Interestingly, H. G. Wells time machine story obeys this law. He builds it, travels to the future and back to where he started. He never goes into his own past. This avoids the paradoxes, like killing your own father so that you shouldn't exist to build the time machine in the first place.
2007-02-14 21:15:20 · answer #4 · answered by campbelp2002 7 · 0⤊ 0⤋
Indeed. We would be seeing people from the future now.
Person above is right, time cannot be altered.
You cannot be a part of two circumstances.. you can't flip from 2007 to 7002 as simply as going up a floor in an elevator.
Let's face it, the only way any of us will see another millenium is if we decide to speed things up a bit and make each year 80 days or less. Even then a lot of people won't see it.
2007-02-14 20:00:38 · answer #5 · answered by Clarke . 3 · 0⤊ 0⤋
no, in the future we wouldnt want to screw up the past which would screw up the future. the only we would find out is if we would in present-day catch a time traveler red handed.
anyways if we knew we would invent a time machine in the future we would make it either sooner or be so quick to the draw we would screw that up too and then in a blink of an eye it would never happen...read up on stephen hawkings book: space time theory. and read about albert einstien they would go in to greater detail.
or just watch back to the future.
2007-02-14 20:07:36 · answer #6 · answered by beasleybadboy 3 · 0⤊ 0⤋
One theory is, that time travel would be possible only from the time of its invention forward, and back to it from the future.
And further to the wisdom espoused above, everyone 'knows' that nothing heavier than air can fly! Earnestly claimed until just 105 years ago.
2007-02-14 20:02:12 · answer #7 · answered by Anonymous · 1⤊ 0⤋
You did know, but they used the Neuralizer gun to make you forget.
I suggest you read the story about this, "Thus We Frustrate Charlemagne", by R.A. Lafferty. Ask a librarian to help you find it.
It's in the book "Nine Hundred Grandmothers", but you might find in other story collections.
2007-02-14 19:58:36 · answer #8 · answered by morningfoxnorth 6 · 0⤊ 0⤋
they would not get past the point when it was invented, unless somebody invented it in the past, we would never know
2007-02-15 00:20:44 · answer #9 · answered by blinkky winkky 5 · 0⤊ 0⤋
yup which means theres no such thing ^_^ time is a unchangable path. Science or common sense its impossible :D
2007-02-14 19:57:26 · answer #10 · answered by jaktricky 2 · 0⤊ 2⤋