if i had a time machine and went back in time and killed my grandma that would mean i was never born... so i couldn't go back in time to kill my grandma... thus! everything would be back to normal including me being born... but that means I go back in time to kill again... god I love paradoxes hahaa
Well...if you killed your grandma, you wouldn't exist. End of story. You can't possibly be born anyway because your grandma is legit dead. I think...