A letter was sent back in time to warn its past self of a disaster. When it arrived, it found its past self already knew about it. How could that be?

Category: Story · Difficulty: medium

Hint: Consider the sequence of events.

Answer

The letter was written after the disaster happened.

Explanation

The riddle plays on the concept of time and causality; the letter was written after the disaster, hence the past self was already aware.

This is a medium story riddle — a moderate challenge for most people. The answer is The letter was written after the disaster happened..

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