This appearance of “perfect fit” makes it seem as if organisms must have been the product of an intelligent force. But this appearance of perfection is deceiving. It gives no hint of the numberless evolutionary dead ends — lineages that, according to the fossil record, survived for a while but then died out, probably because changes in the environment made their once-perfect designs not so perfect anymore.
A really excellent article that discusses both the science and the context of evolution. It works as both a primer on the specifics of evolution as well as a defense against charges that it’s “just a theory.”