Do you think time travel is possible?
@filipek, You realize you are saying the Einstein was incorrect, right? Do you know what relativity theory even is?
I’ve watched that video, and there is a flaw after he starts to talk about the 5th or 6th dimension, was a let down since he is a well known physicist. (And since he made a flaw at the 5th or 6th, the subsequent ones are false as well.)
Yes I know what the relativity theory is, and it is just a theory. In what way do I contradict to Einstein sayings? Einstein said that if you would send a twin throughout space and let the other one reside on earth, and then let the one from space come back to the earth, there would be a difference in their age. But then still, the one from space would not be travelling to the future nor the past, he would just experience a different sense of time in a different dimension, and therefore not travel through time in this dimension.
And what exactly is the flaw you are talking about?
A different dimension? There is no inter-dimensional travelling going on here.
Relativity theory says the greater you accelerate, the faster you experience time. Which means that the twin 1 leaves when both twins are 20 years old. Twin 1 comes back and has aged 1 year and has gone under some extreme acceleration over that one year. When he comes back, he sees his brother (and the rest of earth) has aged 10 years. Has he not gone 9 years in the future? This can be extrapolated further and the twin can go on to extreme accelerations and approach the speed of light, when he stops he can be thousands or millions, or really even billions of years in the future of when he left, there is no limit. Is this not travelling to the future? Every time we get on a plane this happens, but the time dilation is by milliseconds or even nanoseconds due to the very light acceleration.
The flaw is that the extra dimensions he talks about are not the extra dimensions of space, he is actually talking about other universes at that point – which is not what string theorists talk about when they say “11 dimensions” or whatever.
@ijesuschrist, No he has not gone 9 years in the future, he just had a different time experience. Traveling to the future would mean that you could go to a period in your future, and see your older self, but this is not possible since then there would be two entities of you. What you describe is just a different experience of time, since time is something relative. Time on earth is different from time in other galaxies.So this has nothing to do with traveling to the future, because when he will be back on earth, he will have the same time experience as his twin brother. When you would be talking about another dimension/reality, then I can agree with you, but that would mean that there would be a second you, which in fact is not possible either.
And how are the other universes how he describes them different from other dimensions? These are just two different words for the same thing in my opinion.
@martijn, if you need infinite energy then with he equation E=mc2 wouldn’t your mass as you approach the speed of light would exponentially expand causing you to ultimately become unlimited energy you just happen to die in the process. i would imagine from exploding
@ijesuschrist, Actually higher dimensions for string theorists deal with other universe’s. In fact when you get to 10 or 11 dimensions, you are dealing with the whole multiverse. In relativity, you do not ‘time travel’ Both people experience time in the same fashion relative to themselves..the only difference is one person is traveling faster so they in effect experience time faster than the other guy. I wouldn’t consider this time travel really. True time travel would be able to go back and forth.
@ijesuschrist, Yes but how do you want to go to the year 2100 (and then back again)? You are just experiencing time in a different way, it does not mean that you are traveling to the future, not at all. And you cannot experience time faster than me when we are both on the same earth. It is not possible that you are in the year 2100 on earth, and I am still in the year 2012. Do you get my point? I am in a rush here so cannot explain myself correctly. You can travel to the year 2100 somewhere else, while I will be in the year 2050 on earth for example, but that does not mean that you are in the future or something like that. You are at another place, in a different time, but relative to something else. If I remember correctly there is a relative new term for this called ‘timespace’ stating that time and space are two understandings which cannot be seen seperately. Time is always relative to something, as is space.
I think we differ on the way of our understandings of time travelling, but in essence I think we have the same view.
@filipek, I know what you’re saying. And I suppose you are correct. What I am talking about is not necessarily bouncing to the future. Rather, if we want to go to the year 2200, we can.
Further more I have invented a time machine myself in which I consistently go into the future approximately 8 hours from whence I enter, I call it the Bed.
@ijesuschrist, man, where can I buy your invention? I need it badly. Soon I will be in complete darkness and unconscious for about 9 hours and so I would like to skip this part to get to the juicy one, always after the next corner. :)
Just to keep things interesting, here’s another take on time travel. We’re actually time travelling every single moment but we don’t remember anything. http://journalofideas.wordpress.com/2012/04/08/a-view-on-time/
@ijesuschrist, time dilation does not equate to time travel any more than our ever changing “now” does. If you want to get technical, then we are all traveling to the future all the time. As I said earlier, each persons experience of “now” is that persons alone. Whether or not one occurs faster or slower is a matter of perspective. Nothing more, nothing less. This means that if the twin has aged 9 fewer years than the other, then no time travel has occurred, just a change in perspective.
@filipek, your logic stands true.
You’re right. What i meant was with enough lucid dream practice, you could travel to the “past” or “future” in a lucid dream. It’s not the real past, but just your subconscious’ idea of it. Technically it’s not, but imo if you experience it it’s good enough. I hope you understand what i mean, for some reason i’m finding it hard to explain at the moment.
Yeah it’s not actually time travel, but it fulfills that fascination in experiencing historic events or timeperiods, which i’m sure drives most of the interest in time travel. the future in lucid dreams would be less accurate than the past
I think this is showing us there are two different types of time. There is the human time which we try to define by seconds, minutes, hours, and others. Then there is time in the Universe that is just duration. Duration varies because of relativity, whereas the human time remains the same because it is a human invention and not something that exists in the Universe. I think this is what causes these interesting scenarios to pop up. You will always experience a minute as a minute or an hour as an hour, but the actual duration going on varies depending on your speed, mass, etc. So, if we look at the example of a person speeding into space compared to a person on earth, they would both experience human time the same way, but what is actually happening is the duration of time that actually occurred is different for both people. So they could both say, “I experienced 10 years pass” but on one side it could have been 10 years, and the other side could have been 100 years.
What is interesting is that at the speed it takes to ‘jump’ forward in time space actually converges together. Distances between two things shrink, literally. Say I ran a 100 meters at the speed of light..The space would actually shrink between the two points, and the 100 meters would turn into something smaller like 50 meters.
So perhaps what is really going on in the Universe is that everything is just one point. Maybe all the distances are converged together already, but our relative experience lets us see all of this. If light is all around us, and theoretically can shrink distances, we could just be one point in space, which would ultimately make the entire concept of both versions of time an illusion.