The Grandfather Paradox

The Grandfather Paradox questions what happens if someone travels back in time and prevents their own grandfather from having children. If that occurs, the traveler’s parent, and thus the traveler themselves, would never be born. But then, how could the traveler have existed to go back in time in the first place? This paradox highlights inconsistencies and challenges in time travel theories, raising questions about whether changes to the past could create logical contradictions or if alternate timelines might be necessary to resolve such conflicts.