I can illuminate or blind, I exist in waves and particles; I am essential yet often taken for granted. What am I?

Category: Brain · Difficulty: hard

Hint: Think about what allows you to see and is fundamental to life.

Answer

Light

Explanation

Light behaves as both a wave and a particle, essential for vision and life on Earth.

This is a hard brain riddle — a tricky one that takes a little thought. The answer is Light.

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