jumping in - sorry if this was said before...
but take two extremely different methods of trying to validate faith:
one version of fatih can actually be essential to progress - while the scientific method demands a culture of doubt, do you really think individual scientists & teams spending decades of their lives trying to prove a theory (or disprove it's contradictions) are doing so without faith that it is true, despite the obvious fact that they can't yet prove it?
in the same time, there are others who strive to validate their faith through either the ostracizing of those who'd cast doubt on it and the belittling or outright killing of those who'd disagree with.
the difference isn't the factor of faith, it's in the sanity and reason of those who hold it.