This is correct.
You either believe something with evidence (evolution, Newtonian mechanics, some m.a. styles ARE better than others ) or you believe something with no evidence (homeopathy, gods, no touch knockouts)
Actually, faith is essentially trust. You have faith in a person for various reasons. Or more specifically, faith in their actions, abilities, or decisions. Usually, it is based upon past experience with the person or the related past experience of another trusted individual with that person.
Everytime you start your car, you have faith that it will, in fact, start. The less you know about automobiles, the more blind your faith in this simple act is.
For most everything that we believe, we rely upon the research and conclusions of others, which is also faith. The further removed you are from the field that your belief is tied to, the more blind your faith is.
Kenshin made reference to informed reasonable faith, which does exist. The dictionary definition posted by Balrog as supportfor his statement that all faith is blind does not actually read as such. It does say:
1. strong or unshakeable belief in something, esp without proof or evidence.
Generally, the term faith is used to describe belief in somethng that lacks some kind of evidence or support, though the term is not exclusive to such beliefs.
Then you get into what comprises evidence in the mind of the person who holds the belief, whatever it may be.
People who believe in no touch KO's, for example, may believe in the idea because they 'saw' it happen in their dojo. They may not have really seen one; it may have been a case of a sensei who's students will automatically drop for whatever technique he dishes out. The believer is then shocked when the sensei cannot duplicate the result on a non member.
Like starting the car, the believer in this scenario has no reason for his faith to be shaken until his proverbial car won't start. He has "seen it with his own eyes" after all.
So is his faith really blind? Or just visually impaired? Or tricked by an optical illusion?
Another issue with discussions of non physical things in martial arts, such as ki, people often have different definitions for the same term. Look up ki, chi, or qi on MT and look through the threads and you'll see as many different descriptions of ki as there are posters on MT.
Do I "have faith" in the existence the ability to harness one's Ki? Sure, but I define it as breath. The ability to control your breathing is fairly essential to any physical endeavor, so by my definition, ki not only exists, but its application is provable and replicable. So my faith in the idea of harnessing ki is grounded in something tangible.
On the other hand a person who believes that ki is like the force will have a hard time furnishing what would be considered acceptable proof by most, though he or she may believe in it due to a personal experience.
Frankly, most people who believe in something without evidence, regardless of what it is, and refuse to question it, responding with "I have faith," simply want to believe what they believe and are unwilling to look beyond just having faith either out of apathy or out of fear that looking will reveal their belief to be with out base.
Regarding your blog, I didn't find any fault with it. It would be nice to have an actual peer review publication with no investment in any specific art or arts to exhaustively test and conclude.
Daniel