Eyes (complex, image forming ones) are also believed to have evolved independently. Nature got it more right with the squids -- their eyes got wired so they lac

Eyes (complex, image forming ones) are also believed to have evolved independently. Nature got it more right with the squids -- their eyes got wired so they lack a blind spot! Actually there are many cases: http://en.wikipedia.org/wiki/Convergent_evolution http://en.wikipedia.org/wiki/Convergent_evolution