Why 4 Horcruxes left, and not 3??

[ronnie]

No: HPFGUIDX 142133

Christina wrote:
> We know that killing splits the soul and that a horcrux is a soul-
> part's external form.  I hesitate to start picking the math, 
> because we all know that that isn't JKR's favorite subject, but 
> here I go anyway--
> 
> Now, while I don't believe it is strictly stated in canon, I think 
> it only makes sense that each killing would tear one's soul in 
> half, so let's run with that for a while.  


We don't know that: We do know that the first killing (Tom Riddle 
Senior) was used to make the first Horcrux. However, not every 
killing is used to make a Horcrux, even though it splits the soul. 
Voldemort killed much more that 7 times - but maybe only 7 killings 
were strong enough to use the Horcrux Dark Magic, or maybe he only 
needed 7 (being an enchanted number).

A lot of wizards can poll through an AK, but only a few are able to 
conjure a Horcrux. Most of the killings just make people loose parts 
of their souls.  VM is less and less human with each killing, because it *ripps* the soul apart, regardless infinte math calculations. 

expectopatronnie