Slightly OT: Thoughts on Apparation

[siriuskase]

No: HPFGUIDX 42592

I was eavesdropping:
> 
> BBOY_MN Originally said:
> > > 
> > > Honor Among Thieves-
> > > How is anything safe from theft in the magic world? You 
> > > could just pop into the local jewlery store, fill your pockets,
> > > and pop out. Stores and shops may have some enchantments, 
> > > but I would assume that during  business hours, legitimate 
> > > customers would pop in and out all the time. As far as peoples
> > > homes, it would seem very easy to rob them. They may have 
> > > antiapparation enchantments, but that would also stop
> > > you from apparating into and out of your own home.
> 
> Marianne, queen of the deadbolts Replied:
> > 
> > Well, not necessarily.  Why couldn't one set up anti-apparation 
> > enchantments that keep everyone out except whoever the family in 
> > question wants to let in?  My enchantments can be set up to keep you 
> > out, but my husband/adult children can apparate in.  And, since I 
> > trust several friends with my life and my jewelry, I can set up the 
> > enchantments to allow them in, too, in the same way my Muggle self 
> > can hand over a key to the front door. 
> > 
> > And if I want to make people walk through the door into my shop and 
> > not apparate into the back room and steal my stock, my anti-
> > apparation devices can be set up to do that.
> > 
> > But, then that makes me think.  Can a powerful wizard overcome 
> > whatever enchantments a weaker wizard puts on his/her house?  Or are 
> > there other ways around it?  In GOF Sirius tells Harry he's broken 
> > into a wizard home to use their fireplace for the 1:00 AM
> > head-in-the-fireplace talk.  If, as I've always assumed (sorry I
> > can't quote canon here because I simply don't remember it, if it 
> > exists) one needs a wand to apparate, then Sirius had some other 
> > way to break into the house.  And, if that's the case, what good 
> > is an anti-apparation charm if someone can just pick your locks 
> > or jimmy your window open? Or was this a trusting wizard family 
> > that felt that their neighborhood was a safe one and they didn't 
> > need any complicated locking/protective wards?  
> > 
> > Marianne, queen of the deadbolts
> 
> To Which bboy_mn replies:
> Selective anti-apparation-
> True there could be selective anti-appparation charms but I don't
> think we've seen any examples of charms that are that selelctive. But
> then we are dealing with magic, so anything is possible. 
> 
> While you don't come right out and say it, you seem to assume and
> intelligent anti-apparation charm, more like a clarvoiant charm, one
> that can read your mind and tell who you will and will not allow in at
> any given time.
> 
> Sirius, general security, and the break-in-
> It's possible that Sirius literally broke into this place the same way
> you break into a muggle house.
> 
Which started me thinking:

The act of apparation is difficult and dangerous but surely it doesn't
need this collection of intelligent countercharms to make it useable
in wizard society.  A polite wizard would apparate from doorstep to
doorstep and never show up unannounced in someone's living room.  I'm
not even sure that it would be possible for a rude wizard or even the
home owner wizard to apparate through walls.  I don't recall ever
seeing a cannon example of apparation through walls.  Most that we've
seen has been out of doors - they used the forest at the World Cup -
or inside the Weasley's house.  Come to think of it, Arthur just kinda
popped up in the living room at the end of a hard night, didn't he?  I
don't recall any mention of the state of the door, so it was probably
closed.  Does that blow my theory that you can't apparate through
closed doors?  Any other examples?

Sirius Kase