if history changed, would we even know it? because if something different happens in the past, then it would change what was written about that event, and would change what we learned, so would change everyones knowledge instantly to assume that history has always been the way it is. what if tomorrow time travellers go back and give hitlers mother an abortion, and millions of jews never died. the world might be far different tomorrow due to the change in the events of the world, but we wouldnt notice it, because the new past would have lead up to a new present for you too. your own past would have been changed, so nothing would seem out of place. but wait, where was i to experience the new past? i certainly lived whatever life i lived before the time travellers changed things, but then they gave me a new past in a world with a difference history. so where was the me that experienced my new past? well, technically you might remember experiencing it all, since it actually happened to you. this paradox is confusing me imma go to bed ><

Made popular on: 
Tue, 01/08/2013 - 5:28am


Fri, 04/13/2012 - 4:16pm
bakayurei Says:

until we've managed to get close enough to black holes to explore them and the funny way time behaves at certain parts of them, we won't really know how time travel's supposed to work.. .. but until then- the way i see it is, p can never be not p, that's the most basic rule of logic, and therefore i can't e.g. go back in time to destroy my time machine, or commit suicide, or stop my parents from meeting .. and think about all the tiny events that conspired to end up with your parents meeting.. now multiply that by all of your ancestors.. that's a massive amount of tiny things that, if you changed any of them, it would effectively be suicide.. so, of course, you wouldn't be free to change any of them .. .. i think that if we can travel into the past, then we'd never be able to change anything (since there's no way to tell the difference between an action that'll end in you not having committed that action, and one which won't), which would mean that nobody could see us, and we'd just be ghosts, or people watching a 3-d movie of the past

Fri, 04/13/2012 - 6:24pm

interesting, maybe we would be ghosts, unable to interact with anything though our consciousness would be present. that would be pretty awesome just to be able to experience history as it really happened... forget movies, experience the real thing as a ghostly apparition that can pause fast forward and teleport through the actual events. if we were in the past yet disconnected from the physical, we would be disconnected from time also, so the rate at which we experience events could vary.

the thing is, i think if we ever did travel into the past, we would be creating a fork in the timeline, we would not actually be jumping back in the river of time. it would be like an alternate dimension, where our own past remains the way it was, but we create an alternate earth where the past is changed. it would even hold an alternate version of ourselves who actually experienced a different history, we could even accidentally keep our parents from meeting and stay alive because it would simply keep the alternate version of ourselves from being alive. the reason the past cannot be changed is that once something has happened it has happened forever. for example, if you go to a party and take pictures of yourself, even if you literally changed your past to never have had that party, would those pictures still be in your pocket? how could the pictures exist if the event never happened? i have no idea, and i'm pretty sure no one knows, the only explanation i can think of is that it changes events for an alternate dimension of some sort

Tue, 01/08/2013 - 12:08pm

Or, we could actually be involved in the past. Events that happened could be caused by us, traveling back. We could be the reason there's phones, we could be the reason there's any technology.
Maybe someone traveled back in time to invent the wheel, because the human race was too young to understand it, or even attempt to invent it.
Maybe someone traveled back in time to show cromagnon's fire, how to use it to cook, and warm themselves.
Maybe someone who traveled back in time is the one people perceive as "God" or the "Gods" of the past. I mean, you see someone appear in a large metallic machine who talks to you in your language, while also speaking their own due to some device that allows transferable language templates.
They teach you about fire, and metalworking, and war, and peace. They help philosophers find their paths, start teaching about medicine, and then they go back to their own time, to smile, and to be silent about the fact that they were the one who helped humanity get this far.
I can't be the only one who's thought this. It seems like something someone would have figured before.

Wed, 01/09/2013 - 1:14am

not possible... humans would have had to advance to the point of building a time machine before being able to go back and teaching ourselves what a wheel is. we wouldn't have gotten very far without first inventing the basics.

Wed, 01/09/2013 - 3:35pm

Yes, but you can think of it as being like a jump-start.
Someone holding your hand as you're learning to walk.
Just because someone helps you, it doesn't mean that you're incapable, you've just been given a hand. It would be just a slight bit of help.

Tue, 01/08/2013 - 2:17pm

What if we're all from the future, and we're trying to change it's past. When you think about it, the present is just the future's past, or the past's future. fml

Thu, 01/10/2013 - 7:06pm
Justin5580 Says:

What if Jesus was a scientist that went back in time, he had all these new technologies but nobody saw them, that would explain all the miracles.

Tue, 01/08/2013 - 3:01pm
Bruce_Lee Says:

I believe we are already taught a falsified version of history. I also believe that time is a never ending loop, not linear like we like to assume it is. There are an unlimited number of universes so we might be able to go back and alter the timeline, but that doesn't necessarily mean it would alter OUR universe. Ill smoke and elaborate on this further when I get the chance.

Wed, 01/09/2013 - 4:06am

if there are, shouldn't we have noticed a connection to them? especially during events such as nuclear explosions, you'd think if we were connected, the multiversal police would have stopped us from pushing the button.

Mon, 05/06/2013 - 7:34pm
tiggr Says:

maybe they did stop something that was way more terrifying than a nuclear bomb? I would kinda want to know what could have happened if they didn't intervene

Thu, 01/10/2013 - 12:04am
8Pac420 Says:

You see, "People assume that time is a strict progression of cause to effect, but *actually* from a non-linear, non-subjective viewpoint - it's more like a big ball of wibbly wobbly... time-y wimey... stuff.".

Sorry. I love doctor who.

Sun, 04/15/2012 - 9:53pm
Brenbuscus Says:

read the book "1984" by George Orwell. it is kind of a story about this one guy in an opressive government and he realizes if one says how he did something and people accept it as fact it is history

Mon, 04/16/2012 - 12:02am

yeah ive always wanted to read that, just havent gotten to it yet :)

Thu, 01/03/2013 - 2:02am
Gizmodo Says:

If you believe in the multiverse theory, some scientists say that time traveling to the past is completely possible, however you don't travel into our past. You travel into the past of another identical universe where you can wreak all the havoc you'd like and change whatever you want. This way our universe stays the same, time travel is possible, and there isn't any 'mystical' force preventing you from doing one thing or another.

What confuses me, however, is would the time traveler return to his universe when he attempted to go back to his present, or would he stay in the universe he traveled to and witness all of his changes?

Mon, 01/07/2013 - 4:02pm
♫clay♫ Says:

time travel is simply impossible Stephen Hawkins debunked that theory

Tue, 01/08/2013 - 2:02pm

Stephen hawking can't debunk shit, he said foward time travel is possible

Tue, 01/08/2013 - 6:21pm

of course, by orbiting a black hole you travel faster than the speed of light and the rate at which other things go through time. i didn't like his experiment for seeing if time travel backwards were possible though, throwing a party for time travelers may not be taken too seriously in the future, and if time travelers wanted to make themselves known they would have long before now.

Mon, 01/07/2013 - 11:38pm

I think about this often. I love history, absolutely love leaning about our past. But as I got older I realized our history isn't what actually happened. As told by the old quote, "The victor decides how the history is written." Knowing this I have trouble believing a lot of what we are told is our history.

Tue, 01/08/2013 - 2:20am
Tue, 01/08/2013 - 9:01am
Dogface148 Says:
Tue, 01/08/2013 - 1:28pm

you just blew my high ass mind good sir.

Tue, 01/08/2013 - 1:36pm
madmax3 Says:

Actually thought about this today, thumbs up for the interesting question!

Tue, 01/08/2013 - 2:46pm

Pandatroll is popular nao. Can I sit with you at the popular kids table?

Tue, 01/08/2013 - 6:18pm

i prefer the bamboo table myself, but we pandas let anyone sit with us. don't get upset if we eat the table when they serve cruddy food tho k.

Tue, 01/08/2013 - 3:39pm

“History is always written by the winners. When two cultures clash, the loser is obliterated, and the winner writes the history books-books which glorify their own cause and disparage the conquered foe. As Napoleon once said, 'What is history, but a fable agreed upon?”

Tue, 01/08/2013 - 7:23pm
arcon Says:

yes, unless we are using the theory of time travel that each time you time travel you essentially spawn a parallel universe the same as our own save what ever you change

Tue, 01/08/2013 - 7:40pm

i don't believe it's possible to simply create a parallel universe, simply because if you did, how would it progress the same as a naturally formed one? all things happen for a reason, whether we realize why or not.

Wed, 01/09/2013 - 6:44am

but thats subjective. what if there's no reason...for anything? what if we just are? i feel like people create things like religion (which isn't the same as spirituality to me) to give them purpose because without it their lives would have no significant purpose. some people need to believe we're here for a reason but what if we're not. reason is only a theory

Wed, 01/09/2013 - 12:46pm
bakayurei Says:

why wouldn't it? maybe time travellers wouldn't create new timelines, but maybe it's that every new moment in time has infinite varieties to it, and your mind's only ever aware of one path, you might have died countless times in your past but you never realized it because you're still alive in this version of your history

Wed, 01/09/2013 - 6:21pm

that's a trippy idea baka, i've had a similar idea that our current life is only one of the lives we're living simultaneously with countless others. for example, every time we're faced with a choice, our decision leads our life down a new path, but maybe there's a version of ourself that chooses every other option possible, and lives out an entirely different future based on those decisions.

regarding if there is reason or not, i think the answer is clear. why should something happen without a cause? give me one example of something happening for literally no reason at all. even mistakes and accidents happen for reasons, although minute, there is a root cause to every action. the universe couldn't be at the point it is at unless everything over it's 15 billion year history happened, and all of it had to have happened for a reason. elements attract, react, explode, and created everything we know today. of course human reason goes beyond all of that chaos, but even chaos has action-reaction reasons behind it.

Tue, 01/08/2013 - 8:05pm

Too many people post about this without just looking it up...time travel isn't possible. It would have already taken place if it was. That is because only HUMANS PERCEIVE time. It's not real...

Tue, 01/08/2013 - 8:26pm

not true dude... the universe will expand forward in time whether or not humans were around to perceive it (i.e. after an apocalyptic event). also, time goes forward faster near massive objects, especially fast near a black whole where time travel is theorized to be possible.

Wed, 01/09/2013 - 12:47pm
bakayurei Says:

i refute it thus

(i couldn't have typed that if i didn't have the time to type it in)

Wed, 01/09/2013 - 6:24pm

sure, but after you die, i'll still have time to type stuff. you aren't the master of time, you are bound to it. try doing something as fast as you can, and then try to do it faster, then faster again. at some point, you find your own speed limit. this works for going slow also, but less so since we can find patience to. also, you didn't necessarily perceive time while typing that, you simply typed it and it took some relatively random amount of time.

Sat, 01/12/2013 - 2:07pm
bakayurei Says:

that was about what the other fella said, where he said that time's not real and we make it up in our heads, if time wasn't real then i couldn't do anything that requires movement because things need to be moving at a speed higher than zero to be moving at all, doesn't make a difference if i think it's real or not .. but i don't think i've argued that at all, i've just said it in a few different ways haven't i haha .. don't know how you'd logically prove something that sounds so obvious

Sat, 01/12/2013 - 5:11pm

you could type something without time if things simply were able to move, yet nothing made them "age". for example, if energy were never lost in reaction processes, all systems would always remain stable. what causes instability in a system and even causes explosions is a conflicting ratio of certain elements, but if all energy frequencies were equal, everything would be stable and non-reactive. that would mean life forms within such a universe would basically be gods, immortal beings that move beyond the realm of time.

Tue, 01/08/2013 - 8:12pm

Nobody has any real proof or answer. So therefore I feel the need to add, "f**k you, you're all wrong".

Wed, 01/09/2013 - 2:51am

that's why we hypothesize, there is no testable way to prove or disprove anything about time travel.
/thanks for all the recent upvotes guys ;)

Wed, 01/09/2013 - 11:57am
JigenTou Says:

This is why time travel is such an interesting topic... Theres soooo much to think about and consider.

Wed, 01/09/2013 - 9:26pm

To the OP, even if you killed Hitler it does not mean the Jews would be saved. Germany would still have become militarized and Hitler is not the cause of the hatred towards the jews, german sentiment was there already and they hated the jews. Hitler's influence was minimal and no evidence of direct orders given by him has been recovered. However, if Hitler did not exist Germany would still have become a Superpower and dominated Europe, what Hitler did was give orders against experienced advice of Generals that eventually led to losing the war. One of these was the invasion of Soviet Union before dealing with the British and completely take them out of WWII, which many German Generals were adamant about, but Hitler was a madman. Other than that, if Hitler was not around, WWII may not have started in 1939 but at a later date and by then German spies would have learned the U.S acquired nuclear weapons and prob signed a non aggression pact, advised Japan not to attack Pearl Harbor or broke off ties with Japan if they did attack a nuclear capable U.S. Plus it would have taken German scientists at the latest 1948 to acquire their own nuclear weapons. So basically, if Hitler was not around Europe would be dominated by Germany, North Africa and Middle East too. Germany and USSR would be in a race to aqcuire nukes and the first one to do so would use it on the other. We would be living in a completely different world today/

Thu, 01/10/2013 - 3:50pm

i'm not sure i agree, hitler was an extremely motivational speaker, without him, i really doubt nearly as many germans would have willingly supported the genocide of millions. what made the holocaust successful was the willingness of the german citizens to participate in the identification and eradication of jews for more-or-less no real reason other than scapegoating for their economic poverty.

Wed, 01/09/2013 - 11:47pm
Mclazy Says:

i think it would be an alternate reality like in Star Trek...

Thu, 01/10/2013 - 10:02pm
balls4567 Says:

what if history has been rewritten and we're just being conned and jaded by whoever has the real knowledge? it isn't likely but it's interesting to ponder.

Fri, 01/11/2013 - 2:01pm

i'm sure it has been to some extent, but what difference would it make today? it seems like we live our lives and base our opinions of others more on experiences than on what we're told (i.e. history). most of us grow up hating history class even.

Tue, 01/15/2013 - 10:38pm

Every second is a different life... I think about that too sometimes. I even have a highdea about it lol

Fri, 02/15/2013 - 11:41pm

every second is a different life? not that much changes within a second. well... light travels 186,282 miles in one second, but i'm not a lightwave. people are pretty much who they are for their entire life, though their thoughts and outlook on life may change.