What it started as was a collection of photoreceptors. Those gradually evolved into sensing color, then movement. The it started to sharpen images.
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Edited by SPRTN89: 3/18/2015 4:24:17 AMHow did the being ever know light was their? Then color? Or is it all based on luck and time
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Light has always existed in the known universe. Presumably, these proto-organisms were drawn to it to gather energy, and as such, the ones who could track it fared better. Problem with things is that people forget that terms are arbitrary. Colors are completely a creation of human minds. And it's not..."Luck". It's a combination of favorable genetic changes. Early lifeforms can do things like that with remarkable speed, but the higher you go in the complexity, the slower the changes manifest.