I can move forward but never back, I oversee the universe’s clockwork, yet I am not a tick or a tock. What am I?

Category: Science · Difficulty: hard

Hint: Think about disorder in a system.

Answer

Disorder

Explanation

Entropy measures the amount of disorder in a system and always increases in closed systems, representing the forward march of time.

This is a hard science riddle — a tricky one that takes a little thought. The answer is Disorder.

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