Look it up. Religious faith means no such thing. And faith in general means believing “in the absence of proof” which is totally different from “in the abscence of reason” and not unreasonable at all (A few definitions include that it often means “without reason”, but this is not the original or common meaning. I do not defend anyone who has faith “without reason.”) Proof is in no way a necessity for believing something. People who are anti-religion become used to defining things based on their own prejudices against religion. Things like “faith” and “dogma” are in no way supportive of the claim that religion is ridiculous because it’s basically just reiterating the subject matter of religion, yet they (most people who attack religion) use the words like they are striking blows to religion. Same thing with saying “fairy tales” when talking about religion or creationists saying “you believe we all came from monkeys?” It’s very rhetorical and very circular. Excuse me for the tangent but it’s been done in almost all arguments I’ve been involved in and it’s a common mistake to believe that “faith” requires a lack of reason.
I believe we’re largely talking around one another because of a definitional issue, which I identified earlier, but it perhaps needs to be made more clear.
First, there are a few different senses in which one can use the term “reason.” One sense is what I would call a rationale. For example, say that I believe the ball hit the floor when I dropped it because God pushed it down with his invisible hand. This explanation is a reason in a very loose sense; it is a rationale that attempts to explain the phenomenon, but it is superficial. In the other sense, there is reason broadly defined: the very idea of critical thinking and logical argument. In this broad sense, one cannot even argue against reason since the very argument would affirm it in the denile, wrapping one in contradiction. I was using reason in this broad sense.
Second, this is still an equivocation. Your definition makes no distinction between faith and reason. If the two were identical, you would use them interchangably, but even you do no such thing. People who have faith may use reason up to a point, but once it reaches that point faith embarks upon its own course, jettsoning reason itself, and it is at that point that I complain. Classical definitions may say X, Y, or Z when defining “faith” but that matters little. What matters is the distinction between faith and reason as concepts.
Third, the idea that faith is defined as simply believing something “without proof” seems absurd. The only area where one gets proof is in something such as mathematics. Proof means one is absolutely certain. Very few areas of life fall into that category.
People do hold religious beliefs mostly due to this. That’s completely unreasonable. What you said was that faith required people to partition their mind and I don’t think that’s correct as long as they don’t aviod evidence that challenges their beliefs and take it into consideration. It’s understandable that most are afraid to do this, but if one does so and holds their position they have done nothing unreasonable and your statement is false. But what I think is that you believe faith to be unreasonable in the first place and therefore assume that anyone who comes to that conclusion is lying to themselves.
For the layman you are probably correct about most cases, but that doesn’t just apply to people with “faith,” but people just naturally accept the world around them.
It may be true that they look at evidence and decide to hold their position, but that does not mean those people are using reason in doing so. They are using faith, as I explained above. I’ve had religious people accuse me of having faith, which they can only maintain if they ignore the definitions of terms. One major reason for this equivocation is that faith smuggles in the concept of the supernatural, while reason does not. For that alone, the two words cannot be used interchangably.