Hogwarts é Plottable
Isto está implícito no Cálice de Fogo quando Hermione o descreve como uma tática usada pelas escolas que tentam se esconder de magos estrangeiros.
“There’s traditionally been a lot of rivalry between all the magic schools. Durmstrang and Beauxbatons like to conceal their whereabouts so nobody can steal their secrets,” said Hermione matter-of-factly.
“Come off it,” said Ron, starting to laugh. “Durmstrang’s got to be about the same size as Hogwarts — how are you going to hide a great big castle?”
“But Hogwarts is hidden,” said Hermione, in surprise. “Everyone knows that . . . well, everyone who’s read Hogwarts, A History, anyway.”
“Just you, then,” said Ron. “So go on — how d’you hide a place like Hogwarts?”
“It’s bewitched,” said Hermione. “If a Muggle looks at it, all they see is a moldering old ruin with a sign over the entrance saying danger, do not enter, unsafe.”
“So Durmstrang’ll just look like a ruin to an outsider too?”
“Maybe,” said Hermione, shrugging, “or it might have Muggle-
repelling charms on it, like the World Cup stadium. And to keep for-
eign wizards from finding it, they’ll have made it Unplottable —”
“Come again?”
“Well, you can enchant a building so it’s impossible to plot on a map, can’t you?”
“Er . . . if you say so,” said Harry.
Harry Potter and the Goblet of Fire - Chapter Eleven
Como pode ser visto, Hogwarts usa técnicas diferentes para se esconder.
Outra prova da plutabilidade de Hogwarts é a existência do Mapa dos Marotos. Hermione diz no livro 6 que a razão pela qual a Sala Precisa não aparece no mapa é porque essa sala é impossível de se instalar. (Obviamente, implicando que o resto do castelo é plotar).
“I think it’ll be part of the magic of the room,” said Hermione. “If you need it to be Unplottable, it will be.”
Harry Potter and the Half-Blood Prince - Chapter Twenty-one
Portanto, não haveria qualquer razão para tornar Hogsmeade inabitável.