Dumbledore's ability to see Invisible things?

[eris1313]

No: HPFGUIDX 73394

--- In HPforGrownups at yahoogroups.com, "Wendy St John" 
<hebrideanblack at e...> wrote:
>  I was thinking - that Dumbledore can detect Harry's
> thoughts, even though he can't see him under the cloak. And I don't 
think
> that Snape' apparent inability to detect H & R causes a problem 
with the
> theory. I think it's the fact that Dumbledore is better. Although 
Snape
> appears to have some skill at Legilimency, it's *occlumency* at 
which he is
> superb. I really don't think these two skills are interchangeable. 
They may
> be related, and there may be those who are good at both, but I 
think it's
> more likely that most people who have studied them are good at one 
*or* the
> other. I also wonder if these are subjects Harry would have studied 
later
> at Hogwarts, or if this is really advanced and specialized magic 
that many
> witches and wizards never study at all. If it were me, and I knew 
this
> magic was out there, I think I'd sure as heck want to have a go at 
learning
> it <g>, but maybe that's just me <g>.  
> 
> :-)
> Wendy

Sorry if this seems ridiculous, but if Snape were teaching Harry 
Occlumency, wouldn't he have to be proficient (if not skilled) with 
Legilimency?  How would one learn to repel the invasion into one's 
mind if the teacher was not skilled at invading?  If I have 
misinterpreted these skills, I am anxious to be set straight.  
Thanks!!
portia