Somewhere, somewhen, you haven’t.
Just a thought.
What if the person in that timeline (e.g. Marty that is the son of the confident George at the end of BTTF 1) does the fading? Not very fair I admit. Matry’s problem in BTTF was that with no doppelganger to fade, HE did the fading.
Would that resolve the paradoxes?
None of the Butter-McFly Effect children had a chance anyway, after Marty goes back in time. It’s a movie.
Yay. Somebody gets it and I didn’t even have to try to explain it. I just was describing the probability wave as a superposition of states.
A part you are missing is temporal inertia: timelines resist being changed. As long as there was still a chance that his parents would still get together, the timeline defaulted to Marty remaining in existence. As the probability of them getting together decreased, said inertia decreased, and “fading” is when the inertia becomes insufficient to hold the time line back.
I do think you could make sense out of different events fading at different times: the events closest to the point are the least likely to happen without change, as the correction itself would have to change things. But you would think that the probability of Marty’s siblings being born was about the same as his own, being so far away from the change point.
Now, if it had taken Marty so long to fix it that his parents may not have conceived his older brother–that might make more sense.
In the movie… but in real life, they would have to had to conceived at the same exact moment as they had before, right? Same sperm, same egg. I mean ‘Marty’ could have been a girl. To think Marty’s influence wouldn’t alter everything, (which he did apparently), including his and his sibling’s own existence… I mean, IRL.
I know the kiss in the context of the movie symbolized that the tracks were set in place.
Funny I say, “in real life”. You know what I mean.
I do know what you mean… time travel IS possible!
Why? This is all quite simple.
You see, first you have to imagine a frictionless sphere tangent to a hypercat standing on a 2D plane and then rotate that 257 degrees to your meta-left…
You know, I can almost picture that… if I knew what a hypercat was.
A quick Google gave me this.
Would it help if you buttered it?: Buttered cat paradox - Wikipedia
It’s a cat made up of smaller dimensional cats.
And, of course, a hypercat goes up to nine dimensions.
Mine goes to eleven.
IMHO, people in the BttF Universe only disappear when their fate is sealed. Had Marty not caused his parents to be to kiss, he wouldn’t exist. So, since they didn’t immediately disappear, it could be said that their fate was already determined to set everything back to normal. Had they not already been destined to fix Biff’s meddling, they would have disappeared.