Originally posted by MAC269
reply to post by tauristercus
Several times through this thread I have noticed that you say that you do not believe we can change history. In our time line not taking into account String or M theory.
I have come to the conclusion that you are right. I will try to explain why.
Simply put because what ever you do when time traveling the affects of such you knew before you left on your travels.
For example we know that JFK was killed in Dallas so let’s say it is our quest to alter that outcome. We jump into the TM and head back to a time before the shot was fired. If we where successful and JFK returned to Washington that is what history would reflect. Nothing happened. Therefore you would not in the future set out to change the event.
In other words what ever you do on your travels has become history and that is what we have grown up with. That is an example of deliberately trying to affect history.
Now in this instance having returned you may indeed be able to alter the future. However what ever knowledge that you return with has already become history for future generations.
Therefore it is written, it is a plan free will is nonsense and all time has already happened.
String and M theories just don’t seam to take into account where all the extra MASS comes from.
I would love every one on here to let me know where I have gone wrong.
You're correct that I have stated on many occasions (probably to the annoyance of some ) that I PERSONALLY believe that even though we might be able to do "thought experiments" or do "what ifs" about time travel, that the reality may actually be that for very good reasons, nature will ABSOLUTELY PROHIBIT any kind of time travel into the past.
Obviously there are many ways (most suggested in this thread) of ways we could "assist" travel into the future e.g. worm holes, FTL travel, black holes, etc and I don't have ANY problems with that.
Now, from what you've written, I can see that you're beginning to see one of the major obstacles that I believe is primary to backwards travel ... namely that having knowledge of something that has already happened and taking that knowledge back with you, immediately creates two catastrophic situations.
The first one of these being that we have no choice but to admit that "free will" is an illusion and does NOT exist leading to the inevitable conclusion that all of history (past, present & future), everything that has and will happen and EVERY choice and decision that you and I make is essentially pre-scripted and we're just acting out our lives.
The second one is even worse (if that's possible) ... we would have to also admit that quantum mechanics is entirely baseless and also an "illusion". QM theory completely hinges on the total unpredictability of events at the quantum (atomic and sub-atomic) levels and the fact that no matter what we do, we simply cannot predict how a quantum event will transpire.
But the moment we go back in time to an event that we know has happened and that we also know the outcome of, then we are essentially PREDICTING with 100% accuracy how a supposedly "unpredictable" set of quantum events turn out.
For examples of these 2 scenarios in greater detail, please go find my earlier posts and have a read.
And as far as I can tell, there seems no way at all to avoid or side-step around these 2 scenarios.
[edit on 13-8-2009 by tauristercus]