I agree, but I think it's worth clarifying: I think Christians have done ourselves no favors with the imprecision of the use of the word "Faith." One finds in

I agree, but I think it's worth clarifying: I think Christians have done ourselves no favors with the imprecision of the use of the word "Faith." One finds in the Bible or Augustine or Aquinas, or more recently CS Lewis, they all use a particular, consistent meaning of the word that is different from the common meaning. I think what you mention (i.e., faith is the continuing affirmation in something that has been tested) is consistent with that. Unfortunately, many people have used it to mean something like credulity, superstition or blindness (see, for example, the expression "You have to take it on faith"). I think it's important to communicate that Faith is not a thing we do for good luck like some superstition, and it's not a thing that we prefer like one flavor of ice cream to another, nor is it something that simply works for us like some kind of work out routine - that is, something that is useful but ultimately arbitrary.