I also take issue with your definition of faith. Scientists when looking at a new theory that doesn't have a strong body of evidence yet say "this seems like it might be true, so I will attempt to disprove it", taking it on faith would say "this seems like it might be true, so it its true." The dictionary definition of faith is "belief that is not based on proof", so a scientist can never have faith. Either a theory is supported by the greater weight of evidence so it is likely to be true, or a theory has little or no evidence and so it is likely not true. That is a very different system from faith.