If I travel to the past and change one event, I create a paradox. What must I do to avoid altering the future?
Category: Brain · Difficulty: hard
Hint: Consider how one might learn from the past without altering it.
Answer
Observe without interference
Explanation
Observing allows one to learn without creating a paradox.
This is a hard brain riddle — a tricky one that takes a little thought. The answer is Observe without interference.
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