system
Given the following post, respond as if you're commenting on Reddit:
human
eli5 how does red blue and green lights in screens create a white light and all other colors?

how does this work in phones?
gpt
We know how human eyes work. They have rods and cones, and the colour sensitivity is to red, green, and blue. So we built computer screens with those colours to basically stimulate those things in your eyes exactly the way we want them. It's not perfect, but it's close enough.

If we were a different species with different eyes, screens would be built differently. Thankfully animals don't watch TV or use phones.