Physicist Definitively Rules Time Travel Impossible
- Thread starter John Funk
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If there is one thing we know it's that you can't 100% disprove anything.
Admittedly I want to believe in time travel for my own selfish reasons, but even so, this is just a paper at the moment, and we've yet to see these results properly digested by the rest of the scientific community.
Admittedly I want to believe in time travel for my own selfish reasons, but even so, this is just a paper at the moment, and we've yet to see these results properly digested by the rest of the scientific community.
This explains why marty started to disappear earlier than he should have...some other time traveler was doing the same thing in another dimension...about 1 minute earlier.
The planet's day/night cycle is not consistent. Tidal forces between the earth and the moon are slowing the speed of the earth rotation. The moon rotated but the tidal forces of the earth slowed the rotation of the moon to a stop. Doesn't really explain the 25 hour thing though.Scorched_Cascade said:
OT i know a doctor that might disagree with this scientist.
Before anyone feels they should be able to comment on whether doing something with space time, they should bear in mind that we don't really, as a species, know what time even is. We might be able to understand time, but might be able to account for it in our experiments, but what is time? Is it a dimension? Is it the result of "strings"? Is it the only way our brains can comprehend the existence of a 4th spatial dimension, by viewing one atomic slice at any moment?
I wouldn't rule out time travel, not yet, anyway. There's so much we don't understand that how time works. As with all models, there's going to mistakes made with this. You should always remeber, just over a century years ago, most scientists would have assumed Newtonian mechanics were the do-all-and-end-all of physics. (and, unfortunately, a lot of people still do =\ )
I wouldn't rule out time travel, not yet, anyway. There's so much we don't understand that how time works. As with all models, there's going to mistakes made with this. You should always remeber, just over a century years ago, most scientists would have assumed Newtonian mechanics were the do-all-and-end-all of physics. (and, unfortunately, a lot of people still do =\ )
Steven Hawking said it couldn't be done because its a feedback loop. which as a layman just seems easier to understand.
But u can time travel. Forward in time XD just not backwards is all.
But u can time travel. Forward in time XD just not backwards is all.
Well thanks for spoiling Doctor Who for me. And save for stock markets, why would you want to go into the past? It's full of disease and everyone speaks like a Shakespeare play, if you're lucky. Those things gave me a headache in High School.
Now if you'll excuse me, I have a pizza to deliver to one I.C Weiner.
Now if you'll excuse me, I have a pizza to deliver to one I.C Weiner.
But what if 'they' decide to get revenge and fuck up our timeline as payback.Raiyan 1.0 said:I like the idea of alternate realities. We'll fuck up their timelines, but keep our one pristine.
Oooh I see some neat potential for time travelling conflicts...
Fundemental flaw in most of the paradox time change theories, it wouldnt really work like that. time traval is invalidated by things other trhan causality. Its peoples fantasies of changing known history which causality can prove impossible, not the ability to go back in time itself. To bring to light a conspirosy theory favourite area, take JFK, a time travller couldnt prevent that, but if it wasnt the identified people there, it could have been a time travller (please note this is just an example I don't really beleive it is vaugely liekly). Changing can't happen in your own universe/dimension, but actually performing an action could if physics allowed a loophole, as long as you know it happened.blue_guy said:
On the later point, sure we have no idea either way, butt here are pleanty of similar assumtions in this that we have l;ittle idea about.
Personally by the time time travel would be invented in the sci-movie way i doubt anyone would remember any human we today can remember from historyrutger5000 said:
Why would a 4030AD time traveler care about killing someone 5 years before they go and put a bullet in their own head anyway
Time travel to the past doesn't seem to have any practical value what could possibly exist in the past that would be of value to someone with the technology to time travel
Actually there would be an infinite number of universe, which would mean an infinite number of universes in which Hitler would be evil. You could never run out of Hitlers to kill!Shoggoth2588 said:
Another scientist Theorised that time travel would only be possible from the point in time the Time Machine was operational onwards. IE, as soon as it's turned on, some future guy pops out.
"Just to let you know, it works. Gratz."
It was an interesting theory at least, and made a modicum of sense.
"Just to let you know, it works. Gratz."
It was an interesting theory at least, and made a modicum of sense.
Considering only special relativity, time travel was already known to be impossible. Since this man's reasoning is all in terms of special relativity, I don't see what he thinks to have added to the discussion. As far as I can see, he just used his metamaterial as an illustration (a simulation, perhaps) of his reasoning, not an actual experiment in time travel.
Dragonball Z had time travel spot on? What else did Akira Toriyama get right?!
Plus, to time travel (or jump through the 5th and 6th dimensions) you'd need a time and space machine. Remember, the earth is constantly spinning and orbiting the sun, which in turn is spinning round the milky way, and the galaxy is also moving; therefore the earth that existed 1 minute ago has travelled at the least a few thousand kilometres since that point, so if you went back in time or to another reality, you'd damn well better be wearing a spacesuit, or be in some kind of time-ship that has an FTL drive, so you could shoot off and find earth, which I would imagine depending on how far you go would be like looking for a needle in a haystack the size of the sun.
Plus, to time travel (or jump through the 5th and 6th dimensions) you'd need a time and space machine. Remember, the earth is constantly spinning and orbiting the sun, which in turn is spinning round the milky way, and the galaxy is also moving; therefore the earth that existed 1 minute ago has travelled at the least a few thousand kilometres since that point, so if you went back in time or to another reality, you'd damn well better be wearing a spacesuit, or be in some kind of time-ship that has an FTL drive, so you could shoot off and find earth, which I would imagine depending on how far you go would be like looking for a needle in a haystack the size of the sun.