There's a huge difference between the colloquial use of the word "faith" and what we know to be an educated guess. Scientific hypotheses are educated guesses.

There's a huge difference between the colloquial use of the word "faith" and what we know to be an educated guess. Scientific hypotheses are educated guesses. Going to a doctor to treat a medical condition over going to the witchdoctor is also an educated guess. In both cases, the person making the decision has knowledge about the subject matter and makes it congruent to what he knows. When your doctor makes a decision, it is because of not only his past experience, but the accumulated knowledge of other physicians. This is entirely different from "I believe that a perfect, omnipotent, omniscient, benevolent creator-god sent his perfect son to die for our sins," because there's no evidence that any of that ever happened.