RE: Who's the most prominent Christian on this forum?
August 30, 2012 at 4:49 pm
(This post was last modified: August 30, 2012 at 4:58 pm by The Grand Nudger.)
You mean the main parts of a particular kind of eye, the camera eye...lol (an eye which was used as an example in one of the links I sent you, describing the convergent evolution of vertebrate and [some]cephalopod eyes). Curiously there is one significant difference between these similar types of eyes, with the cephalopod eye coming out ahead of our own, and both function. There is even a nice little tidbit of info on why this is the case
"This difference may be accounted for by the origins of eyes; in cephalopods they develop as an invagination of the head surface whereas in vertebrates they originate as an extension of the brain."
Boy, sounds like science is fucking mystified....
Now, take that camera eye, remove the cornea/lens combo, and you have whats known as a pinhole camera. You can step this back further into a pigment cup by simply flattening the curvature around the photoreceptive cells. Of course you can go a step further and just have those cells sitting on a suface that is in no way curved around them...and you have an eye-spot. All four of these eyes (our camera, the pinhole camera, the pigment cup, and the eye-spot) function, and each one is represented in creatures both alive and extinct. This is a very very roughshod run over the development of the eye, but it serves it purpose in describing just how ignorant the "irreducibly complex" line of bullshit is. There are other types of eyes, and you can read all about them......
In the links I already sent you.
(it might also help to mention that the eyes I referred to are all found in cephalopods....not just a willy nilly selection of eyes from creatures taken at random- I love those fuckin things..smart too)
"This difference may be accounted for by the origins of eyes; in cephalopods they develop as an invagination of the head surface whereas in vertebrates they originate as an extension of the brain."
Boy, sounds like science is fucking mystified....
Now, take that camera eye, remove the cornea/lens combo, and you have whats known as a pinhole camera. You can step this back further into a pigment cup by simply flattening the curvature around the photoreceptive cells. Of course you can go a step further and just have those cells sitting on a suface that is in no way curved around them...and you have an eye-spot. All four of these eyes (our camera, the pinhole camera, the pigment cup, and the eye-spot) function, and each one is represented in creatures both alive and extinct. This is a very very roughshod run over the development of the eye, but it serves it purpose in describing just how ignorant the "irreducibly complex" line of bullshit is. There are other types of eyes, and you can read all about them......
In the links I already sent you.
(it might also help to mention that the eyes I referred to are all found in cephalopods....not just a willy nilly selection of eyes from creatures taken at random- I love those fuckin things..smart too)
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