There are 2 types of faith:
1. Blind Faith
2. And Evidenced Faith
The only thing Blind Faith requires is blind belief. Blind Faith can never be used to assert positive belief or disbelief, it is perfectly justifyable for "personal belief". It doesnt mean anything in terms of determining what is "true" or "untrue".
Evidenced Faith requires evidence. When you say "I am going to throw this ball, and it will travel a parabolic path through the air", then you need evidence to back that claim up. You can cite the Laws of Physics as your evidence, or you could perform an experiment, or you could cite examples where this observation in similar conditions has always been correct.
However, when you assert a positive claim that requires evidence, but the Evidenced Faith is contradicted by currently existing evidence, you must reject the faith. Refusing to do so, and that Evidenced Faith becomes labeled with a term called "Willful Ignorance".
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In actuality, I was trying to call "science" by a name which Iaachus could relate to.
I often find using the "Blind Faith vs. Evidenced Faith" analogy is good for defeating arguments that sound like "Evolution requires just as much faith as Creationism". And that is absolutely correct, however readers of those kinds of arguments implicitly assume the faith being referred to is blind faith, but that is not the case. Evolution requires Evidenced Faith (or science), and I would hold Creationism to the same standards of Evidenced Faith. No evidence for Creationism, then Creationism must be abandoned.