hey guys long time no post. so i was kinda board and thought i would make this and see what you guys, and girls think. so time travel its fun and games in tv, movies, and games right but would it actually work. my theory is that it could work but only to an extent. besides the fact that you would need so much power you could blow up the moon. back to topic, time travell could only go forward in time. this is because if you were to go backwards you would be preventing whatever happened in the first place. so let me give you an example.
for three years a man walks to his mail box every day to see whats there. but one day when he gets home he finds his house has been robbed. whats he going to do. he desides to go back in time and wait for the robbers so he can kick some ass. heres the problem. if he goes back in time to stop them there will be 2 copies of himself. 1 walking to the mail box, and 2 waiting for the robbers. if he stops them and then goes back to his time he will sees to exist. this is because the othere copy of himself will find to or more robbers bellding on his carpet and wont know what happened. so in a sense he never has to go back in time, and the copy who went back in time is still pretty much comited suicide. so because he stoped the robbers that copy of himself doesnt exist any more, and he would have to stay in the past to live. or he would just disapere when they dont rob his house.

anyways this is my theory as to why we cant change the past , so tell me what you think. no im not an expert on this, i just watch to much tv and play to mush zelda. so have fun

Alex, the Chronokeeper and master of all Chronomancers!

Discussing the topic time travel is an adventure for itself - not easy because our knowledge is hardly limited here, but indeed interesting.

I believe going back in time IS somehow possible (astronomic wormholes) - but we ain't live until to the point were we brought this under control

However, I'm sure that we, the humanity, will find out more regarding time travel within the next years!

Yep, I also agree that time traveling is complex subject that no one can fully define on. Although I'm voting that there can't be time traveling in the past, cause many things (bad or good) will be happened/prevent to happen.
If there is a time travel device, that will be definitely for the future only.

Btw there wasn't some time thing with the astronauts when they are in space and their bodies are staying younger or older rather they should be here on Earth?? Dunno the whole part thou..

What I know/think is: If time traveling in past ever exists, then why someone from the future haven't returned to the past (our time) ?? Tricky ain't it?

After meaning and managing money, banks and stuff, the Time itself probably is the most confusion and mysterious thing that the human mind cannot resolve, nor to command it.

Well, i'm not sure if time traveling won't work, as Sokki said there is that thing about staying young on space, maybe humanity could simulate that effect and multiplicate it enough to make people look like 20 years old but stay actually with 50, it would be almost like time travelling.

hey im glad you guys are interested i man thats great. but im not so shure if you know what i was trying to explain or not. so ill try again, but if you do understand this will be another example. so lets say i get up tommorrow go out the door to school trip and brake my nose and lose a tooth. so bad stuf happens and i want to change it. later i go back in time and warn myself that im going to trip. then when he doesnt trip im gonna sese to exist. this is because when you go back in time and warm yourself there will be 2 copies of yourself. and if the past copy dose not trip the futer copy will never have came back in time, and there would be no reason for the past copy of himself to go back sinse hell have his teeth. so i hope you guys do understand what im trying to say. but if not just ask and ill try to explain it better, oh and im still not an expert i just play to much legend of zlda.

I do understand what you are talking about, I myself also watch movies n'stuff. Once I read a great book which discussed the matter more deeply (though the book was not actually about time travel).
Trying to put what you said in other words: It's impossible to go to the past, because every single millisecond you lived there, you would change the way something happens, leading to millions of reactions.

Example:You go to the past and appear in the middle of the street. That causes an accident in which a driver tried not to hit you, but ended up hitting someone else who was walking by. That person happened to be your father. He then dies. You weren't born yet.

Think about it: It's like dividing by zero. If your father died before you were born, you wouldn't exist, therefore, you wouldn't go back and cause the accident, letting him live. But he died. So what?
Isn't it complicated? It makes my head go boom!!

That's why I believe it's impossible to travel back in time. Just saying.
By the way, watch the movie Twelve Monkeys if you haven't. It may be a little bit hard to understand, but it is sure worth it (it's also an action movie).

That's it guys, please take your time to read and tell me what you thought!! Thanks

yes thats exactly what im talking about gabrielok. i just couldnt find the right ords but your way explains it perfectly. i was trying to explain the same thing but if you met yourself and prevented something from happening and if i dosent the version of yourself that it happened to stops existing. so i gues that kind of solves it, but we can talk about it more if you guys want or what would happen if you went into the future, and heres another example.
ex. say i go into the future looking for a personal robot slave. this is where it changes, if i go to the future at 12pm. then i choose to arive 22 years later and find a robot and bring it back. i then go on to mass produce them and become rich. in those 22 years your not there, and you can come back at the exact moment you left. who really invented the robot. it wasnt you and if you do it in the past then the person who did it in the futer never does it. what happens?

First of all there is a theory that the faster you go the faster time goes.So it is posible to go to the future but only with much beter technology.And if you think about it they could have a time machine you cold travel back in time while the past you could be in the vehicle and make sure that the time machine would be done.

It says the faster you go the slower the time goes*

Based on that, there is a theory I saw on the Discovery Channel that proposed there was a train which traveled around the world at abou 99.99% of the speed of light. As time would go slower within the train (I can also explain that if you ask), if it went round The Earth for, let`s say, 20 years, assuming the speed would go at 1/4 of normal speed people inside would only age 5 years.
What does that mean? It means that, if you were 20 when you boarded and your father, who didn`t go with you, were 50, when you came out you would be 25 years old, while your father would be 70 years old. This is how someone would travel to the future.

Nice huh? The show got me thinking for a good time