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We saw, with Slughorn's altered memory in HBP, that it's more or less impossible to tamper with Pensieve memories without making it obvious that they had been tampered with.
I don't think that follows at all. Dumbledore calls it "very crudely done", which implies that it's at least theoretically possible to do it much better. Thus, either Slughorn could not do better, or for some reason chose not to try. It is possible that it is very difficult to do any better and that you are correct (although I bet if anyone could do it, Severus could -- how well known is it that he's an adept Occlumens, anyway?), but that one example doesn't prove such a theory.
he would just want to get the hell away from Britain's Wizarding World and build a nice quiet life somewhere in the pursuit of his own happiness. What a concept. ;-)
Mmm! Dead horse paté! *gets a cracker*
(Sorry hon, jes bustin' yer chops. I'm not serious. I like it too. :) )
I don't think that follows at all. Dumbledore calls it "very crudely done", which implies that it's at least theoretically possible to do it much better. Thus, either Slughorn could not do better, or for some reason chose not to try. It is possible that it is very difficult to do any better and that you are correct (although I bet if anyone could do it, Severus could -- how well known is it that he's an adept Occlumens, anyway?), but that one example doesn't prove such a theory.
he would just want to get the hell away from Britain's Wizarding World and build a nice quiet life somewhere in the pursuit of his own happiness. What a concept. ;-)
Mmm! Dead horse paté! *gets a cracker*
(Sorry hon, jes bustin' yer chops. I'm not serious. I like it too. :) )