Design comes from Nowhere (2)

So where does the shape of an eye-lens come from?

...Not from the outside: nature (as in: "natural selection")...
The particular shape if a lens, the fact that a lens "should be" translucent, these facts do not directly derive from the environment; they are not somehow specified in the outside world. (No, also not in the mind of some god.)

...Nor from the inside...
There is no, let's say, a-priory knowledge of lens-shape or -functioning inside the genome or elsewhere in the biological system that is the target of natural selection, nor an inherent tendency to produce lens-shape structures.
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