Gummug, on 13 October 2012 - 10:31 PM, said:
Thanks for the link Hasina and I'm sorry to take so long to comment on this, my excuse is, I've got so many brands in the fire as it were. Even the chart you linked, convincing as it does seem to be, in my mind begs certain questions. For example, (maybe it was there and I missed it) the chart doesn't give an example of each kind of mollusc, so did they just make this up? 'Cuz if they did I could do the same thing with the ear and any other organ or part. I'm not saying they did, I just don't see an example of each type of "eye". I mean the name of the mollusc or animal of each stage.
But did you read the entire page? Evolution's not a certain science, we'll always be missing a step because at this current moment in time we only have the animals that are the current product of evolution, all other animals that proceeded them are dead, and the majority were probably never fossilized. Also, if you want an example of each individual stage, and explanation for every eye that's ever evolved, that's a good way to think, but it would be bloody difficult for anyone to do. Not all animals of today will have an example of the different kinds of eyes, and as the page says, octopuses and mammals evolved the same sort of eye independent of each other, and the eye itself has many, many flaws. It's by no means the perfect way to perceive the world.
Edited by Hasina, 13 October 2012 - 10:48 PM.