CHAPTER DISCUSSION: Prisoner of Azkaban Chapter 3: The Knight Bus

[pippin_999]

No: HPFGUIDX 189451

 
> blackcatnocturne (entering delurk mode now):
> 
> But Dumbledore, along with everyone else, was under the impression that Sirius was a Death Eater. Therefore, I don't think he would have seen any reason to adjust the wards to deliberately guard against Sirius, because he's already "guarded against" i.e. the wards keep Death Eaters out, Sirius is a Death Eater, the wards will keep Sirius out.
> 

Pippin:
Not only that, there are no spells specifically to bar traitors or  Sirius Black per se-- how could there be? There's hardly a plotline in the books that doesn't turn on the possibility of  treachery and the immense difficulty of keeping a determined and powerful wizard out of someplace he wants to go. Even if Dumbledore stood watch himself, he couldn't expect to do a better job than the magic already in place, which never sleeps or eats or needs a potty break, and  can't be bribed or blackmailed or distracted. The Death Eaters went to and fro upon the earth and up and down upon it, everywhere but Privet Drive, which stood impervious for sixteen solid years.

Pippin