Where was the grandfather paradox first mentioned?
Correct answer: Science fiction stories

Player #25874027
Blooply,
Not Commando ? Predator? Running Man ?True Lies? Twins?
You need to watch more movies?

ProteanJay69
If our universe is a series of different holograms , we can time-travel and change our past and start another hologram line divergent from the one where we previously were.