Could someone help me find the post of the person who wondered why, with all the light rays bouncing off of multiple objects and crossing in complex ways, do we see distinct objects instead of a light "blur" of some sort. He put a drawing in that showed many light lines crossing and said that was how he construed what our eye should be seeing.
I'm a neuroscientist with a strong interest in physics. I have an answer for him but I cannot find the original question. Could someone help please?