I’ll gladly pay you last week for a hamburger tomorrow.............
I always side with Alfred Bester’s and Roger Zelazny’s book Psychodrome theory:
The universe is big, one little grandfather paradox is small, don’t worry about it.
The biggest problem with time travel is that one cannot go to a place that doesn’t exist... like the past... or the future.
The past has passed. Or has it?
It has always been obvious to me that time travel to the past is and will always be impossible. If it were ever possible, even 10,000 years in the future, we would be flooded with tourists from the future, because there would be no way to infinitely keep such technology from being misused.
Ya don’t say.
In plain language????
So if any of us actually was a time traveler, we'd never know it :)
He establishes his own parameters, presents his own question, then proceeds to solve it. Not very scientific!
There once was a young lady named Wight,
Whose speed was much greater than light.
She went out one day,
In a relative way,
And returned on the previous night.
There was a game, US Patent No. 1, about time machine inventors fighting to get the first patent on the day the patent office opened.
If I could travel back in time, I’d go back to February 15, 1971 with 60 RU-486 pills. I’d go to d’Ottawa and feed Margaret Trudeau one pill a day, from February 15 through April 16.
The Grandfather Paradox is solved by reading and understanding 1 Samuel 23 and quantum physics.
If you went back in time, you would be interacting with the matter there but it wouldn’t be YOUR grandfather you were interacting with. It would simply be a person in the other timeline which you created by interacting with the matter in it.
Similarly, David gets killed by Saul in Keilah and also he doesn’t get killed by Saul in Keliah. We are in the second timeline.
Sci-Fi plotlines will become infinitely more boring under this constraint.
Maybe this can account for the bright light people report in near death experiences.
I wonder what happens to the numbers if hyper-luminal travel, via exotic propulsion or hyper-space shortcut, induces a negative time dialation effect.
IOW... If your reference time at point of origin is where the Universal clock is based off of. At Sub-C or C speeds, time dialation means that your experienced time becomes subjective and real space/time clicks along at a different pace.
This is where the usual tropes of 2 year subjective becomes hundreds of years for those you left behind.
But now consider hyper-luminal... where that time debt is no longer subjective. Your 6 month trip out, 6 months on-site, and 6 months back at n+C speeds means you come back and only 18 months have passed. The difference in n+C would then only effect how much volume you’ve traversed.
So if you save Lincoln, then Lincoln has still been shot in your universe, but you've created a new universe in which Lincoln has not been shot.
Something to do with string theory, I think.
Sending mass into the past adds mass, and energy, to the universe in the past, which adds mass to the present out of nowhere. Can’t be done.