Forward Time Travel

p51 said:

Interesting concept about location. The only sci-fi I ever read that mentioned changing locations being a hazard in time travel had the time machine on a boat, engaging at high tide with the understanding that everything had to be secured for a almost-certain instant fall to whatever level the water was at (on the water due to the extremely unlikely event of colliding with something already there) and had checked for tides to be sure they didn't show up in high seas.
But positions of the planet? I think of stuff like this all the time and even I never thought of that before!
But watch this, it's hilarious:

And as for movies on the subject, I recently saw the 2012 movie, Safety Not Guaranteed and found it to be a really good small-budget film. It didn't hurt that it was filmed not terribly far from where I live, too. But if you're curious, watch the movie. If you read the Wikipedia plot, it's not nearly as fun as watching what happens. I thought it was great watching the whole concept escalate and it had a neat ending, I thought.

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p51 said:

Interesting concept about location. The only sci-fi I ever read that mentioned changing locations being a hazard in time travel had the time machine on a boat, engaging at high tide with the understanding that everything had to be secured for a almost-certain instant fall to whatever level the water was at (on the water due to the extremely unlikely event of colliding with something already there) and had checked for tides to be sure they didn't show up in high seas.
But positions of the planet? I think of stuff like this all the time and even I never thought of that before!
But watch this, it's hilarious:

And as for movies on the subject, I recently saw the 2012 movie, Safety Not Guaranteed and found it to be a really good small-budget film. It didn't hurt that it was filmed not terribly far from where I live, too. But if you're curious, watch the movie. If you read the Wikipedia plot, it's not nearly as fun as watching what happens. I thought it was great watching the whole concept escalate and it had a neat ending, I thought.

Click to expand...

p51 said:

Interesting concept about location. The only sci-fi I ever read that mentioned changing locations being a hazard in time travel had the time machine on a boat, engaging at high tide with the understanding that everything had to be secured for a almost-certain instant fall to whatever level the water was at (on the water due to the extremely unlikely event of colliding with something already there) and had checked for tides to be sure they didn't show up in high seas.
But positions of the planet? I think of stuff like this all the time and even I never thought of that before!
But watch this, it's hilarious:

And as for movies on the subject, I recently saw the 2012 movie, Safety Not Guaranteed and found it to be a really good small-budget film. It didn't hurt that it was filmed not terribly far from where I live, too. But if you're curious, watch the movie. If you read the Wikipedia plot, it's not nearly as fun as watching what happens. I thought it was great watching the whole concept escalate and it had a neat ending, I thought.

Click to expand...

EngProf said:

There is/was a "Dilbert" comic strip on the subject of time-travel and future-position.
In the first frame Dilbert and the other engineers are putting the test-subject/guinea-pig (person) into the time machine. In the second frame (as they are pushing the start button), Dilbert asks if anyone considered planetary motion with time. In the third frame the test-subject/guinea-pig is shown floating in interplanetary space, choking and turning blue.
(There is a bit of inside-engineering humor here, since we take courses that are specifically devoted to the calculation of such things.)

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Zombie_61 said:

Ah, but that's exactly my point. Earth is moving through space at an estimated 18.6 miles per second/30 kilometers per second. If you travel only forward or backward in time and your location is fixed, the odds that Earth will be in the exact same place when you arrive are infinitesimal. I'd hate to be the person responsible for doing the math on that trip.

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LizzieMaine said:

Killing Hitler results in the immediate creation of an alternate time stream in which Hitler was killed, one which co-exists alongside the previous time stream in which Hitler was not killed. Whether you, as the killer of Hitler, continue exist in the new time stream as the only person with a memory of the one from which you came, or whether you're instantly jerked back into your own time stream, remains to be determined.

There are an infinite number of time streams in which there are an infinite number of ways in which Hitler was killed by an inifinite number of people. There are also an infinite number of time streams in which there are an infinite number of ways in which attempts to kill Hitler were foiled by a secret task force designed to intercept time-traveling assassins.

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LizzieMaine said:

And there's also an infinite number of time streams in which Hitler is foiled by an infinite number of monkeys with an infinite number of typewriters creating an infinite number of superweapons. It makes you think.

What if the existence of Hitler is the sole fixed point around which all possible time streams converge?

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Lean'n'mean said:

Sounds like you have an older version of our TX series of time machine,these were notorious for failing to follow the Earth's trajectory when calculating coordinates. With our latest model, the TX 400, you are assured of a pleasant & safe journey through time as it comes fully equiped with a global stationary device which ensures that the machine remains permantly on the earth & so all time travel will automatically find you, either in the past or the future, firmly on terra firma, there where the earth was or will be according to your chosen time frame. It should also be noted that, due to the lack of feedback from our customers using the older versions, we now offer a fail safe option, which will indicate in advance before arriving at your destination, any dangers that may have a bearing on your continued existance
Now, you gonna buy this thing or waste more time.

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Lean'n'mean said:

Here is another conundrum for time travelers; Could one go back in time & influence future events & if so, how would one know about it since what one knows, has been learnt by what has already been written...

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LizzieMaine said:

Killing Hitler results in the immediate creation of an alternate time stream in which Hitler was killed, one which co-exists alongside the previous time stream in which Hitler was not killed. Whether you, as the killer of Hitler, continue exist in the new time stream as the only person with a memory of the one from which you came, or whether you're instantly jerked back into your own time stream, remains to be determined.

There are an infinite number of time streams in which there are an infinite number of ways in which Hitler was killed by an inifinite number of people. There are also an infinite number of time streams in which there are an infinite number of ways in which attempts to kill Hitler were foiled by a secret task force designed to intercept time-traveling assassins.

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Haversack said:

But what if it is a car that goes back in time to kill Hitler?...

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