Can the Marauder's Map be deceived?

[annemehr]

No: HPFGUIDX 54287

--- In HPforGrownups at yahoogroups.com, Gina R Rosich <grosich at n...> 
wrote:
> I have a question about the map myself.  Can it see double?
> 
> In PoA, Snape runs to the Shrieking Shack because he sees who is 
there when
> he glances upon it in Lupin¹s office.  But, then the kids go back in 
time.
> So, wouldn¹t Snape then see TWO Hermiones and Harrys on the map?  
Then he
> would have an anser to Dumbledore telling him the kids couldn¹t be 
in 2
> places at once.  Or does it only register the ³original² person and 
not the
> time-turned one?  Or did he simply not see the doubles hiding out in
> waiting?
> 
> ---
> Gina 
> 

Actually, I don't think *anyone* ever saw the timeturned Harry and 
Hermione on the Marauder's map.  Here's my reasoning:

I don't believe that the map shows anything in the forbidden forest, 
just as it apparently shows nothing of the inside of Hagrid's hut (as 
inferred by Lupin's words that he watched the trio enter the hut, and 
then later saw them leave, but now they were accompanied by 
Pettigrew).

So, Harry, Ron, and Hermione left the castle under the invisibility 
cloak to see Hagrid before Buckbeak's execution, and Lupin saw them on 
the map.  Meanwhile, the Timeturned Harry and Hermione discuss what 
Dumbledore wants them to do and then make a run for the forest, as 
quickly as they can, but around behind the greenhouses because they 
are afraid to be seen by someone looking out a window (PoA, Ch 21).  
The Timeturned H&H leave the castle after the trio do, but arrive in 
the forest just before the trio knock at Hagrid's door.  Lupin doesn't 
notice the timeturned pair partly because he is keeping a close eye on 
the trio already, and partly because the pair are going around 
another way.

Okay.  TT!H&H (that's timeturned Harry & Hermione) wait in the forest, 
 off the map.  The trio leave Hagrid's with Scabbers, and Lupin is 
watching them intently.  As the Trio make their way along under the 
invisibility cloak, TT!H&H wait for the right time, Harry emerges from 
the forest, Harry drags Buckbeak into the cover of the trees, and they 
move to another spot in the forest where they can see the Whomping 
Willow.  *Then* they see Ron emerge from the invisibility cloak to 
chase the fleeing Scabbers.  So, the only time TT!Harry leaves the 
forest (to get Buckbeak), Lupin is intently watching the Trio in 
astonishment since he now sees Pettigrew with them.  He does not 
notice an extra Harry pop out of the forest for Buckbeak.

TT!H&H remain in their place in the forest while they watch Lupin run 
into the willow, while Snape goes to Lupin's office and sees *him* 
running into the willow, and while Snape himself runs into the willow. 
 Snape never had any opportunity to see TT!H&H at all, as long as the 
forest is off the map.

Is there any canon to say that the forest is off the map?  Not really. 
 I did look up the "Veritaserum" chapter of GoF to see how Crouch Jr. 
described seeing his father arrive at Hogwarts on the map.  Here it 
is, for what it's worth:

"For a week I waited for my father to arrive at Hogwarts.  At last, 
one evening, the map showed my father entering the grounds.  I pulled 
on my Invisibility cloak and went down to meet him.  He was walking 
around the edge of the forest. ..."

So, it sounds as though Crouch Sr. never went through the forest, but 
around it, which is inconclusive as far as seeing into the forest with 
the map is concerned.

And even if TT!H&H were on the map the whole time, it is completely 
plausible that neither Lupin nor Snape noticed them because they were 
looking very intently at something else at the time.  But yes, I do 
believe the map can see double.  As long as there were two Harrys and 
two Hermiones somewhere that the map showed, then they would all be on 
the map -- just as it shows transformed animagi and people under 
invisibility cloaks.  

Finally, does anyone know whether the Forbidden Forest is part of the 
Hogwarts grounds or just outside of them?  I would check Dumbledore's 
words at the welcoming feast in PS/SS, but I can't lay my hands on 
that book at the moment!

Annemehr