Doesn't make any sense.
The alternate timeline principle is more like parallel universes.
One school of thought states that you cannot change your past. If you travel back and kill your father, you cease to exist, which means there was no you to travel back and kill him. So, it either becomes an infinite loop or you are just unable to change the past.
The other school of thought states that you would be creating a new reality hat does not affect your existing timeline. You would now be an orphaned subject in this new universe. You've essentially creates or jumped into a parallel universe where you never exist. The only way for you to go back would be to jump back to a few moments before you appear and kill your father, kill that other you and restore the timeline. Now you could go forward And return to your time as it was.
There are other variables. For instance, were you seen or did you slow a car down when crossing a street or any other number of insignificant events you may have causes that could butterfly outward.
Anyhow, it makes the head spin.
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