The paradoxes I've mentioned are very related to issue with time travel. Even if you're able to travel back in time, you have to overcome these paradoxes, or you'll be traveling into an alternate universe that have an entire set of scientific laws that nullifies the logic of mentioned paradoxes. I won't count jumping universe as time travel because you're no longer influencing the universe you are from, but rather in another universe.

There's theories that the universe we live in keep duplicating itself everytime a single 'tick' of universe time is passed. These duplicates are infinite that they account for every possible outcome of certain event in the universe. Quantum physic stuff if I am not mistaken

Eg. If you rolled 2 dice, there can be 37 outcome, so at the moment you roll the dice, your universe will be duplicated 36 times for a total of 37 different outcome(36 plus the one you're currently in).

Time travel is not only theory, but it's actually happening. We're traveling into the future 1 second at a time what

The question now is can be manipulate that constant flow of time that we can move back and forth at any point of time in space?

I still think no

Observing time traveler? Whee! We blew billions to create the universe's biggest history book

If the universe is predestined, you won't be traveling back in time, even as an observer. What you observe in the past may alter your present perception that will alter your future action. So if it's predestined, you shouldn't be changing your mind after reading what's in the past because that will alter the future.

In a predestined universe, Hitler will never get killed but WWII would still happen. It's contradicting because, if WWII were to still happen because it's being 'predestined'. Hitler would be predestined not to die as well

Actually no, space is full of space dust. At the speed of light, hitting a single sub atom is like the entire Jupiter slamming your body.

Outer space isn't actually void of nothing. If you travel beyond the border of universe, the empty 'space' is actually something. So it's sort of a perspective issue

This post has been edited by SeaGates: Jun 15 2009, 10:51 PM

i asked my teacher this ques yesterday. he said from maths calculations, yes, it is possible.

but if is possible, we should see someone from the future with their assets together here..

If the universe if predestined, maybe even the time-travelling that you do is already predestined. On Hitler getting killed, that's my opinion (or rather speculation) on semi-predestination. What I have in mind about semi-predestination would be that some events are predestined and some are not.

No, I think you misunderstood me. I said there no air friction in space.
This post has been edited by Thinkingfox: Jun 16 2009, 03:15 PM

Ahh, yes, I semi-misunderstood you on the friction thing. There's no air in space

Particles of space dust as small as hydrogen still exist however. If you're going fast enough to pass through lots of these particles, their cumulative force resistance is enough to drag you down just like air

yeah. the space is dust, but then would it be possible to travel at the speed of light?

One of the greatest misconceptions is that time is this "something" that you can travel. Who says time is something that you "can travel" anyways? Time is simple: it is change; nothing more and nothing less. You can have more change (like time "speeds" up), less change (like time "slows" down), or no change (like time stays "still"), but you can't have negative change. I hope that clears things up.

But dont worry, At least you can stop the agging


Thanks
Rcode

Probably on how we define time travel.

Based on time dilation,
If my inertial frame were to experience time dilation, where my inertial "clock" move slower, the observers flow of time would have gone past me.
Let the observers time frame would be hypothetically t=2000s where as in my time frame it would only be t=1500s both relative to the "True clock" or "start of event"
To myself, my time frame would be the "true" timeframe. I see the observer as something that have yet to exist on my time frame, something that is aged t=2000s. But only 1500s has passed in my time frame. Hence i can conclude that i have "traveled" to the future.
To the observer, i am "younger" than i should be. I have "aged" only 1500s where as their "clock" shows that it is t=2000s. Hence, they can conclude that i have travelled from the past.
Isn't this in essence the "time travelling" that is hyped about?

Evidence is quite clear on how the subatomic particle,muon which has a lifespan in nanoseconds before it decays, reaches the earth's surface from the upper atmosphere. Even if it travels at the speed of light, it wouldn't have been able to reach earth's surface based on its lifespan yet we are able detect them at our surface.


Though, special relativity and time dilation explains only going forward in time.

Going back in time however, some theories suggest that a massive enough object is able to curve space time so greatly that if we are able to "jump" the void caused by the curvature, we will reach a point in spacetime where the actual flow of time has yet to arrive. Black hole as THE possible massive object?. Though this is general relativity which requires maths which i can't even understand, to well .. understand it.



PS. strictly on time travel. Paradoxes are situations based on us as humans. Since if humans approach c, we will lose almost all of our mass and turn into energy Though i have used human descriptive, specifically those in " " as it is easier to understand

This post has been edited by befitozi: Jun 18 2009, 05:24 AM

Do you experience some sort of sense; for example;

Today, you dream about something.
About a week, you go some place that you never been and suddenly, you feel that you have visit that place, but can't recall when.

is it similar to time travel as well?

It's not time travel...it's called Paramnesia.

Theoretical speaking, Paramnesia experiences are just an aberration of this normal recognition experience. No worries!

Regards, Joey

p.s: I experienced it before. Kind of weird but it's all psychology.

I don't think that can be considered time travel because it happens in your subconscious. I think it's also known as Deja_Vu. I have experienced that before. In fact, I've heard of quite a number of people who have experienced it before. But I think topics like that come under metaphysics.

yes it's deja-vu.not linked to time travel.i've experienced it many-many times.at first i also did feel kinda weird having such experience.but after seeing one documentary,i forget which one,everything about it clears up for me.no, its not metaphysics let alone some form of time travel.it's pure biology.how our brain process information.the experience we feel we have gone through actually never took place before.it's only our brain somehow 'incorrectly' perceive it that way,putting that information in wrong section of the memory...aahh my brain's bleeding trying to explain this.

about time travel,what is 'time' in the first place.i think couple of forummers already brought this up.it's likely to be the conclusion for this topic but it seems people here love the going on debate.its an interesting topic afterall.i'll continue reading after friday prayer

IINM, the definition actually means the confusion state whereby you think that you are familiar with a certain condition but it's all in your brain. I blogged about it before referring to an article from newscientist.com

-- But of course people do refer Deja Vu as promnesia --

This post has been edited by eXPeri3nc3: Jun 19 2009, 01:17 PM

I believe there is time travel... it was proven a success by the US government.. go google for the survivors for project manhattan and... another project which is the time travel project... mentauk i think...

de javu? though there aren't much concrete reliable scientific explanation on this matter, i believe this have very much to do with parallel universe theory. whereby there are many variables of result that can come off from the same action then the fruit of said action then may causes a chain affect of after results and its a cycle of the same thing.

of course it is impossible to have different results in this current time and in this current universe, but it could be a clash of results that when it involves ourselves, thus us having a feeling of something has happened before.

if parallel universe u are talking about quantum physics.. then String theory would be the better answer to this.

Even if a governing body fails to control access to time travel, those who have such machines are probably very powerful organizations such as governments, not your average Joe walking in the street. I mean, it's not like today's typical household owns any nuclear weapons.

And they will also aply strict codes of conduct when traveling into he past, and work discreetly so as to minimize the butterfly effect.

I say 'minimize' because the effect still exists, and because of these time travelers, our future is always in flux (our future changing each time there is a change in he past).

Anyhow, I think time traveling is just science fiction. Pseudo science at best.

This post has been edited by mylife4nerzhul: Jun 24 2009, 04:21 PM

In terms of human time traveling probably. As far as scientific theory and real life application, it is already happening and used in today's techonology (GPS satellites).

Though it also depends on how you define time travel. An analogy i made based on the maths of time dilation is in one of the post above.

TIME TRAVEL ARE A NONSENSE !!!! YOU HEAR ME NONSENSE !!!

Garbage talk will get you all nowhere without fact and logic thinking.
I do logic think and this is logic !!!

IT IS NONSENSE AND A JOKE THAT PEOPLE CAN TIME TRAVEL !!

Do you all Agree with me??? Your thoughts..

Obviously you didn't bother to read the posts that are here in this thread.

It still doesn't stop rogue members/agencies from using it for illicit/unsanctioned action. Unless you're sending robots back in time, but what are the guarantee that it will not malfunction or has Trojan code in it's programming?

Codes of conduct only look good on paper, practical wise it's a terrible way to enforce law and order.

Nothing to back up what you've said, now that's what I call nonsense

Seems like the only garbage in this thread so far is from you

Come on, say something to back up your 'logic thinking' that time travel is nonsense.

This post has been edited by SeaGates: Jun 29 2009, 10:13 PM