Spencer278
Diamond Member
Originally posted by: 3chordcharlie
Originally posted by: Czar
here is "proof" that humans have eveolved somewhat
There is a tribe somewhere in the pacific where everyone has different eyes, the tribe relies heavily on diving in the sea for food so instead of pupils in normal people where they ... shrink.. when in water their pupils expand ... or might have been the other way around, but the point is that they see alot better in water then anyone else and that is because they needed to because they had to survive
edt.
their pupils shrink while in water
http://www.divernet.com/news/stories/evolve060703.shtml
Careful - it's because someone at some time was born with eyes that worked like that, and due to the 'world' they were born in, those eyes gave them selective advantage. (At least, that's the evolutionary answer).
So they don't have them because they need them, they have them because they became available, and provided an advantage.
Correct alot of people screw-up the hourse and cart when it comes to evolution. The people didn't decided to change their eyes and they changed. But you should be careful about assuming that because they use their eyes to an advantage over other predators that their eyes change because of that advantage. For all we know some strange disease killed off the normal eyed people and the other peoples eye gene was near a gene that protected them from the disease.