What about time travel? They had a pocket time travel device and they couldn’t strangle baby Voldemort? Or was there some Avengers endgame multi dimension thing preventing that?
some Avengers endgame multi dimension thing
Some in-universe Harry Potter thing!
Officially, JK says she went too far with the time turners, so she destroyed all of them:
Well at least she admitted to it.
I’ve not come across an in-universe explanation that made sense seeing as its always been “time travel dangerous.”
Considering the numbers that have died directly and indirectly because of the whole Voldemort thing, a single person sacrifice doesn’t seem all that bad.
Also, if it’s so dangerous, what adult in their right mind would give a time turner to a child so she can follow more classes? She’ll still literally age the same, spend the same time in school. Just have her take more years at school of age wants to learn more, instead of giving one of the most dangerous items ever to a child so she can use it to literally be in the same building at the same time, something easily verifiable by her classmates.
a single person sacrifice doesn’t seem all that bad.
What could it cost?
A whole phenomenon of a series!
Assuming Voldemort’s rise didn’t somehow prevent an even more evil wizard from coming to power, or in the timeline without him Arthur Weasley had too much time on his hands and started messing with nukes…
IIRC Time Turners can’t change the past. Whatever actions you do while in the past have already happened the first time around, you just didn’t know it because you didn’t travel to the past yet.
Correct.
https://en.m.wikipedia.org/wiki/Novikov_self-consistency_principle
Within that framework, HP timetravel is self-consistent and, say, Back to the Future and others of that type aren’t.
Very well shown in Rick & Morty snake timetravel episode. The snakes do the inconsistent time-travel and Rick only does consistent.
Time turners can’t change the past that you observed and even then it could’ve been an illusion or a trick. Dumbledore could’ve gone back in time to save Sirius and then cast an illusion making everyone believe he passed through the veil. The past didn’t change, only people weren’t aware of what was really happening.
That’s pretty much the plot of the play Harry Potter and the Cursed Child. It’s about the original protagonists’ kids and time travel (and it’s written by Rowling, so it’s canon).
Not to spoil anything I think anyone can guess that time travel part doesn’t exactly work out as expected.