The academic definition of the word faith allows a large degree of ridicule to be applied to scientific debate on religion. As I understand it, the understanding that is being required of a person when they are asked to have faith is….
a) that all discernible questions have an adequate answer
b) that these answers are fundamental to the question
c) the nature of b requires that it is not possible for you to have or provide all the answers all of the time
d) that if you patiently observe these principals when there is need, the answer is far more likely to be found than if you entertain knicker twisting antics.
Seeing as organised religion was developed around conveying as much meaning as possible to masses with minimal education, it hardly seems unlikely that various words would be developed to serve such purposes.
Having said this, how is it applicable to provide a scientific appraisal of religion by applying academically layman definitions to review of the discipline?