Altering Timelines Violates Relativity

Twighlight

Quantum Scribe
Let's consider Titor going back to 1975 to shoot himself and reverse his screwing up of the alleged timeline.

Now, 1975 was 35 years ago. That means that the events of 1975 will not just be confined to Earth, but photons from 1975 will now be 35 light years away. Someone with a powerful enough telescope on a planet 35 light years away would even see Titor going into the building to get the IBM. And they would be seeing that NOW.

So...any attempt to reverse the timeline then has to 'recall' all those photons that are light years away. But relativity insists nothing can travel faster than light..........so, how is your altering of a so-called timeline in 1975 going to instantly travel across 35 light years and affect those photons ?

Photons do not have some 'memory' that says ' I bounced off John Titor in 1975 '.....so how the hell does a photon 35 light years away KNOW that it is supposed to disappear if John Titor does ?
 
The new timeline you created by killing
John Titor does not effect the old
time line you just created a divergence
(new timeline) so in otherworlds the light
does not have to match since you are
on a new timeline. Time travelling to
the original past is impossible since you
were not in it originally there thus you are
in a divergent reality.

Time travel is event driven so you are travelling
to older events to change things but note you
will have no effect on the light that has left.
(The only way time travel can work is if old
days repeat constantly so you can change the outcome).
If this is not true time travel is impossible
there is no way to effect old past.

'Events are true time' not time itself since it has
expired for good due to the theory of old light
(relativity) as Twighlight said.
 
The new timeline you created by killing
John Titor does not effect the old
time line you just created a divergence
(new timeline) so in otherworlds the light
does not have to match since you are
on a new timeline. Time travelling to
the original past is impossible since you
were not in it originally there thus you are
in a divergent reality.


Hmm.....no, because every many worlds state INCLUDES the current one...which has no special status but is just one of many. Thus, if you go back in time in our timeline and shoot Titor, he sure as hell has to be dead in OUR timeline !

People keep on again and again making this mistake. They forget that whatever rules they apply to other timelines also apply to ours. All too often, people try to perform some timeline trickery on 'other timelines' to get out of a fix.......but forget that to anyone else OUR timeline is 'another timeline'. They also forget that ALL timeline events include the continuation of whatever one they are in......which does not NOT just suddenly terminate just because other timelines broke off !

Thus, if someone from another timeline were to go back and change ours......this may create other timelines BUT whatever you did ALSO happens in the timeline you visited. There is absolutely no reason why it shouldn't......and it is absurd to suggest that you can go back to timeline xxx and shoot John Titor, yet John Titor somehow is not dead in timeline xxx. Of course he is.
 
You said that if the time line reverses photons get recalled. That is not how it works. To be specific in terms you can understand a time line is a set of events that occur in space time from point A set of space-time coordinates to point B set of space-time coordinates. The time line is like a hard drive. It is RW (read and write.) No the set of events get written over. There you go.


No ! What you say 'appears' to make sense......right up until you really consider what is going on.

Sure, you could argue that if you go back in time and shoot Titor, then there are no photons 35 light years away to have to recall......and a different set of events spreads out instead.

BUT...you forgot one important point....if you are going to follow that line of arguing.

You see....your going back and changing the past would then change all subsequent events such that a future in which you NEEDED to go back and shoot Titor would no longer exist. You end up negating the very reason for your time trip !!

You thus end up with a one-ended time trip. You DON'T shoot Titor....because your memory that you SHOULD shoot Titor is from a future that no longer exists if you do shoot him.

Think about it. If you were ordered to shoot Titor on May 23rd 2010, and you travel on May 24th. You arrive in 1975.....shoot Titor....but you are doing so based on a memory of a command given on May 23rd 2010. If you shoot Titor.....that future no longer exists ! How can you have a memory from May 23rd 2010..if May 23rd 2010 is now such that you were never ordered to shoot Titor because the future is now such that you don't need to ?

In your version of things, you find yourself with the ultimate paradox. If you just 'overwrite' history then you negate the very future in which you time travelled. You would arrive in 1975 with no idea what you were there for.
 
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