The first five books of HP are told from the point of view inside: everything is seen through the eyes of Harry.
In the 6th point of view begins to change. The reader needs to know that the Unbreakable Vow Snape formula. But there's no way that Harry knows it, or at least he knows when the episode is recounted. Consequently, the narrative must temporarily abandon the view of Harry.
This does not mean that the narrative becomes not focused, that is, the narrator becomes omniscient. In fact, it almost seems to know even less. When we witness the encounter between Snape and the two sisters Bellatrix and Narcissa, it is as if we were silent spectators of the scene. Let's see what happens, hear what they say, but we are not aware of the thoughts of the characters. In other words, Rowling takes the external point of view.
do not see things from the point of view of Snape, but from the outside. If not, we could not judge Snape: you can not judge a character while you are inside him . But the judge Snape and how, the judge and basically evil.
In these pages I have supported the goodness of Snape before HP came out 7th. Was therefore not necessary to explain who insists that the verdict on Snape is a misjudgment. But the point is: how can we so wrong? The answer may be this: Snape look outside, consideriamo le sue azioni senza conoscere le sue intenzioni. Se la narrazione adottasse il punto di vista di Piton, ciò non sarebbe possibile.
Naturalmente, si tratta di una condizione necessaria, ma non sufficiente. La focalizzazione esterna non basta a spiegare perché giudichiamo male Piton. Per farlo, è necessario che si aggiunga il pregiudizio negativo, che abbiamo maturato attraverso gli anni, guardando Piton con gli occhi di Harry.
