help with JKR quote/ Children's reactions

[houyhnhnm102]

No: HPFGUIDX 176628

Sali:

> I also don't think it's clear cut that the Map does 
> think for itself. Snape is considered by the Marauders 
> to be their enemy. It is possible that it was created 
> with anti-Snape defences and is merely following the 
> default pattern for those who do not activate it 
> correctly. Of course, this then raises the question 
> of how Fred and George worked out how to activate it 
> correctly. I could explain it away but I suspecting 
> it was just something else that wasn't thought through.

houyhnhnm:

It was pointed out long ago that the Map addressed Snape 
by his title and the Marauders had no way of knowing that 
Snape would become a Hogwarts professor.

On Harry's first foray into Hogsmeade via the tunnel, he 
didn't know the incantation to open the statue of the 
hump-backed witch and the Map supplied it to him.  
>>The tiniest bubble had appeared next to his figure.  
The word inside said, "/Dissendium/."<<

I take that as evidence that the Map thinks for itself. 
I can imagine that it revealed the secret of its activation 
to Fred and George in a similar manner, recognizing them 
as kindred spirits.