The dramatic prognosis is the calculation the audience makes about the hero’s chances of reaching the goal. You can examine the dramatic prognosis within your story in the planning stage or in the revision stage; it may be helpful in highlighting where the story is lacking.
The inciting incident is often misunderstood. Even seasoned writers sometimes make claims that there can be multiple inciting incidents or that it can occur before the story even begins. But I would argue that most of those claims are rooted in a misunderstanding of the role the inciting incident plays within a story.