A very nice column by Olivia Judson:
The third reason to teach evolution is more philosophical. It concerns the development of an attitude toward evidence. In his book, "The Republican War on Science," the journalist Chris Mooney argues persuasively that a contempt for scientific evidence -- or indeed, evidence of any kind -- has permeated the Bush administration's policies, from climate change to sex education, from drilling for oil to the war in Iraq. A dismissal of evolution is an integral part of this general attitude.
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But for me, the most important thing about studying evolution is something less tangible. It's that the endeavor contains a profound optimism. It means that when we encounter something in nature that is complicated or mysterious, such as the flagellum of a bacteria or the light made by a firefly, we don't have to shrug our shoulders in bewilderment.
Instead, we can ask how it got to be that way. And if at first it seems so complicated that the evolutionary steps are hard to work out, we have an invitation to imagine, to play, to experiment and explore. To my mind, this only enhances the wonder.
What she said....