If you travel back in time and kill your grandfather before he had children,
what happens to you?

Question

Accepted Answer

The grandfather paradox has no clean resolution — physicists propose either you can’t (timeline resists), multiple universes (branching), or you were always the killer. — Stephen Hawking hosted a 'time traveler’s party' with invitations sent AFTER the event. Nobody came. He considered it experimental evidence.

If you travel back in time and kill your grandfather before he had children, what happens to you?