Can A Life Debt Be Engineered? (some MD)

[pippin_999 <foxmoth@qnet.com>]

No: HPFGUIDX 51911

We don't know how the magic reacts to the wizards' intentions, 
but apparently it does.  There seems to be some sentience in 
magic, so that it can detect and respond to the willingness of a 
servant to donate flesh for a potion, or of a mother to give her life 
for her child. 

One could argue that the intention comes soley 
from the wizard, but then how can a life debt be created in the 
case of Pettigrew and Harry, where neither of them wants it? The 
magic has to be able to determine somehow that a life is in 
danger and then that someone else has saved it. However, if a 
rescue is planned, wouldn't that mean the danger is less?

Suppose, giving an MD twist to the other life-debt situation, that  
Sirius  thought it would be really funny if Snape had a life-debt to 
James and planned the Prank to bring it about. This would at 
least explain why Sirius didn't think about the danger to Lupin.  
But if Sirius intended all along for James to pull Snape back, 
would a life debt still exist?  Or would Sirius's intention that 
Snape be saved so obviate the danger that no genuine life-debt 
would be created? 

Pippin
who joined after GoF came out, but is looking forward to sharing 
OOP with the list. And who is not another version of Pip!Squeak.