News > What is the grandfather paradox of time travel?

What is the grandfather paradox of time travel?

If you went back in time and accidentally killed one of your ancestors, what would happen to you? The so-called Grandfather Paradox has been weighed by physicists and philosophers alike for nearly a century. Broadly speaking, the Grandfather Paradox is a colloquial term for just about any causality paradox. While not quite a law, causality is certainly fundamental to our understanding of basic physics, which depends in part upon the idea that cause must come before the effect.