The question of how the eye works - that is, what happens when a photon of light first impinges on the retina - simply could not be answered at that time. ↗
Although Darwin was able to persuade much of the world that a modern eye could be produced gradually from a much simpler structure, he did not even attempt to explain how the simple light sensitive spot that was his starting point actually worked. ↗
In just the same way the thousands of successive positions of a runner are contracted into one sole symbolic attitude, which our eye perceives, which art reproduces, and which becomes for everyone the image of a man who runs. ↗
The eye by long use comes to see even in the darkest cavern: and there is no subject so obscure but we may discern some glimpse of truth by long poring on it. ↗
I do have body-image issues, just like everyone else. I mean, I wish I had bigger boobs. And I hate my butt. I want an onion butt - you know, a butt that'll bring tears to your eyes? ↗