Being Good and Evil /Hermione is Voldemort in making?

[houyhnhnm102]

No: HPFGUIDX 155041

katrinalisa:

> Think of Unbreakable Vows, Marietta is a
> witch, she should understand that in the WW you 
> don't just break promises like that.

houyhnhnm:

If every signature on a parchment constitutes a magically 
binding contract, why would Crouch!Moody have needed to 
point out that Harry was magically bound to compete in the 
TWT?  Why would any argument have arisen over Harry's 
withdrawal from the tournament?  Karkaroff and Madame 
Maxine would have known it was a magical contract if 
in their world there is no other kind.

I can think of only one other example of someone signing 
a parchment (other than a letter)--permission forms for 
third-years)--but one can imagine occasions on which  
witches or wizards would have to sign their names--
transferring property, entering into apprenticeships, 
making wills (We know they make wills). Are all of these 
signatures magically binding?  It's possible, but where's 
the canon support?

What *about* all the letters that go back and forth 
between characters in the Potterverse?  If there is 
something inherently magical about putting one's name 
on parchment, wouldn't it come into play even with a letter? 

And if there isn't, why should Marietta be particularly 
wary of putting her name on Hermione's parchment for any 
reason other than the obvious one that it will incriminate 
her if it falls into the wrong hands?  Marietta does not 
know Hermione, has never had a class with her, never saw 
her brewing polyjuice potion at the age of 13.  Hermione
had not yet come up with the protean charm on the galleons 
at the time of the Hog's head meeting. Marietta cannot 
reasonably be expected to be aware that Hermione is 
capable of NEWT level magic.