Let's Model the Evolution of the Entire Vision System!

Wowbagger

The Infinitely Prolonged
Joined
Feb 2, 2006
Messages
15,660
Location
Westchester County, NY (when not in space)
This thread is the first part of what (I hope) will be a two-part series. In this thread I will accept ideas for a particular model I would like to build. In the second (proposed) part, I will collect the best ideas, and then present my working model for further scrutiny.

I would like to build a model demonstrating the evolutionary heritage of the entire human vision system: The eyeball, the development of the optic nerves, and the mental processes that go along with all that, etc.

It might take the form of a step-by-step narrative, in the end. "at this stage, the brain looked like this, while the eye looked like that. A few centuries later, they both adjusted into this other configuration" - that sort of thing.

It is quite possible that such models exist, but I have not been able to find any convenient references that bring all this together, in one easy-to-digest place, yet.

I have already started digging into the standard locales:
http://www.don-lindsay-archive.org/creation/eye.html (and other TalkOrigins things)
http://evolution.berkeley.edu/evolibrary/article/eyes_01 (and other Berkeley stuff)
The Howard Hughes Institute, for example: http://www.hhmi.org/news/zuker20061001.html
And, of course, Climbing Mount Improbable, by Richard Dawkins.
Etc.

But, any links to more places would be nice. Especially links to actual papers. I might not be able to read the whole thing, but a good abstract, or two, could go a long way.

I am NOT interested in any pure speculation, guess-work, assumptions, etc. Only evidence that has independently verifiable observations behind it, will be accepted.

The model, itself, will of course, be considered a provisional one, and subject to change, as the quality of evidence improves. But, I do NOT want be accused of merely speculating on this. I want REAL science supporting every step, as strongly as possible.

And, for an added bonus: any such material that has a direct impact on helping us resolve specific eyesight problems will be very much appreciated, and such contributors will get a "gold star" of some sort, later on.

It should be noted, for those who are going to ask, that I do not intend to do any original research for this project. I simply wish to paste together the best of available, existing research, and I will include all of the references, of course.

Oh, and one more thing: If anyone claims they can build a better model for the history of vision, using something else, (such as Intelligent Design), you are welcomed to try to present your model, here. But, please only contribute models that improve our understanding of the eye, with ever greater precision. Do not flood this thread with claims that evolution of the eye is impossible, because we already have lots of material demonstrating otherwise (see links above for some examples. I can provide more, if you really need me to). We are here to BUILD models, not to scoff at the very attempt.

Remember: We want to see the eye evolve together with the nerves, brain processes, and other relevant aspects. Details about each piece is important. But, ultimately, they will all be glued together, into a single set of steps. So, gear your references in that sort-of direction, if you can.

Now, let's get started!
 
Nature had a whole big special lump on Darwin the other week. Including an article describing how the eye turned out to be one of the greatest successes of the theory of evolution. Just had a quick look on the website and can't find it quickly but I'd suggest having a look. (Note I only read the start of the article so I can't vouch for it being exactly what you want.)
 
Why the human visual system. You have something against arthropods and othet invertebrates?
 
We're getting fewer responses here, than I figured. Would I have gotten more if I lied, stated that it was impossible for the eye to evolve, instead?

Why the human visual system. You have something against arthropods and othet invertebrates?
No. But, I figured the human aspect would make the most impact on other humans.

I'm sure the eyes of other species and clads can help us in this endeavor.
 
I have to dig into my copy of Dawkin's Ancestor's Tale. I believe it has a nice section on the evolution of the eye.

Hah! Obviously you can't come up with any rational evolutionary explanation for the banana! God's perfect fruit.
 
Does describing the eye developing in an embryo help here? In that it develops from a simple epithelium and controlled by evolutionarily conserved genes.

This site looks helpful.
 
Does describing the eye developing in an embryo help here? In that it develops from a simple epithelium and controlled by evolutionarily conserved genes.

Ontogeny does not necessarily recapitulate phylogeny...

I believe TalkOrigins has some info on eyes. I'll look it up the link when I have a minute, or you can search for TalkOrigins...
 
Just to get this out of the way:

Step 1 - Nothing
Step 2 - Then a miracle occurs
Step 3 - Ta-daa! Eyeballs!
 
Thanks, but I am looking for sources a little more detailed than that. I've been running thorugh the references sections of other videos and books that describe that process.

Just to get this out of the way:

Step 1 - Nothing
Step 2 - Then a miracle occurs
Step 3 - Ta-daa! Eyeballs!
So, based on this model: If we want to solve all sorts of various eye problems, we should simply wait for more miracles to occur?

Nice try, but I think a more detailed model would be more useful for developing more reliable medical research.

(take no offense. I assume you were kidding. But, I responded in the same way I would to someone who wasn't, just in case one such person should lurk in here.)
 
So, based on this model: If we want to solve all sorts of various eye problems, we should simply wait for more miracles to occur?
Sure, why not? We could just wait for the sun to start dancing around the sky again so that people could stare at it for several hours on end. That's sure to solve all sorts of various eye problems.

Nice try, but I think a more detailed model would be more useful for developing more reliable medical research.
No, no, obviously we would train doctors in the use of miracles. Aren't you paying attention?

(take no offense. I assume you were kidding. But, I responded in the same way I would to someone who wasn't, just in case one such person should lurk in here.)
What makes you think I'm kidding? Why, one day we might even see eyeballs complete with flagella and coagulating blood, miracles permitting.
 

Back
Top Bottom