The “leap of faith” story is not the only kind that occurs. Equally reflective of our own mind’s processes is the slow change story where the Main Character gradually shifts his perspective until, by the end of the story, he is seen to have already adopted the alternative paradigm with little or no fanfare.
Usually, in such stories, a particular dramatic scenario occurs near the beginning of the story and is then repeated (in some similar manner) near the end. The Main Character reacted one way in the first scenario and then the audience gets a chance to see if he responds the same way again or not. In the Slow Change story, the Main Character may never even realize he has changed, but we, the audience, are able to evaluate the worth of the journey the Main Character has been through by seeing whether the Main Character has been changed and whether that is for better or worse.
In our current Western culture, especially in Hollywood-style motion pictures, the leap of faith story is favored. In other media and cultures, however, the Slow Change story predominates. In theory, each reflects the way our minds shift belief systems: sometimes in a binary sense as a single decisive alternation, and other times in an analog sense as a progressive realignment.