Altering time, history or even small events has been a dream many people have had.
This thread will focus on altering the passed and not the future.
One reason to why altering time, history or even small events should be impossible.
Lets say that I have acquired means of traveling in time, allowing me to change the passed.
Lets now take a senario where i lost a loved one.
So i go back in time and prevent this person for dieing.
This will create a paradox where I never lost this person and have no need to go back in time to save them, thus i dont, and they will stay dead.
This works the same for any other given senario you find your self going back in to alter time, removing the reason for you to go back and change it in the first place.
Another senario that I have thought alot of. I have the means to create a worm hole that will go back in time, i now create one and shoot my self, 1 min back in time. Who killed me? I was killed 1 min before I could pull the trigger, and there for I cannot have killed my self.
ofc If u were to go back and lets say, kill Hitler after the war was over then, at least i belive, that should not alter time in any major way that would make it impossible for you to have the idea to kill him your self
What are your thoughts of these paradoxes that should make it impossible, in theory, to alter history in and major way.
Disclaimer: I'm not a scientist/physicist nor do i have a substantial understanding of how time travel would have any impact at all.( but lets face it, do anyone?)