A time traveler goes back to meet his great-grandfather and accidentally prevents him from meeting his great-grandmother. What paradox arises from this action?
Category: Brain Teasers · Difficulty: expert
Hint: Consider the implications of altering one’s lineage.
Answer
The grandfather paradox.
Explanation
This scenario creates the grandfather paradox, where the time traveler’s existence is jeopardized by his own actions.
This is a expert brain teasers riddle — one of the harder riddles here. The answer is The grandfather paradox..
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