Here’s what compound eyes really do — and why flies see you in slow motion. A few centuries ago, scientists believed insects saw thousands of tiny, repeated images — like a kaleidoscope of candle flames. But that’s not how compound eyes work. In this episode of Big Ideas from the team behind Deep Look, Niba explores how insects actually see the world — from the structure of ommatidia to motion detection, ultraviolet color vision, and the evolutionary advantage of seeing faster than we do. From ancient trilobites to modern pollinators, this episode dives into the evolution, physics, and neuroscience behind the most common eye type in the animal kingdom.