Science itself works on the foundation that you remain objective and evaluate the facts before comming to a conclusion.

Evolution came about after extensive study of various species around the world by Darwin and many other scientists after him. The fossil record also backs up the theory of evolution by tracing the development of species through the ages... Early species of Birds for example started out looking more like dinosaurs with a few feathers and gradually their features changed to become closer to what we see today.

The problem I have with "intelligent design" is it didn't come about after unbiased scientific analysis of the facts. It came from people determined to prove that their religion is scientifically true... They knew what their goal already was beforehand and so selected fact to support that pre-determined goal.

I was always told that a scientist comes to conclusions after analysis of the facts avaliable, not having facts selectively taken to fit a pre-drawn conclusion.