Using a time machine would be more difficult than it seems.
Time Machines
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would need to look at matter and time as two intersecting spots on a map and send someone to a given spot of matter at a given spot of time in order to avoid the whole earth is moving problem. Of course, you don’t want to KNOW how big of a database you’d need to pull THAT off..
i already went back and look i am living forever and ever
There might, at some time, be a way to isolate one region of Spacetime from all other regions of Spacetime from a temporal perspective – you could call that region a kind of time-machine; or you could call it a deep-freeze; or a can of beans.
I really don’t know how that would help you identify changes in the timeline external to your Spacetime region, ‘though.
1] You’re either experiencing the same relative Time, or you’re not. You’re either outside your safe region or not.
2] Whether out or in your region, that region and all regions of Spacetime around it are still in the same Dimension or Reality you started out in, and in which, it’s safe to assume, the same “timeline” will apply – as the same Spacetime and timeline will exists everywhere, Universally and in each tiny part of the Universe the same, now matter where and how it is – it’s just experienced relativistically.
Changes in what you call the “timeline” would mean changes not just on Earth in respect of Hitler, but Universally down to each tiny element, and for the whole of Spacetime, for that Dimension: so your little safe Spacetime region experiment has only isolated you relativistically, like a freezer – your freezer will still be in the Universe, and the temporal displacement you are trying to avoid by the exercise would still apply to you, Universally – you would just “experience” it Relativistically [although you wouldn't actually experience anything, as has been pointed out].
So the answer is, maybe.
But it doesn’t matter at all because:
A] You wouldn’t be able to “avoid” the changes in the way you describe, and
B] everything you have written is nonsense.
Thanks.
Whoever thought this up and then sat there typing it in, believing it made any kind of sense, is a total idiot.