How much of the Prophecy Snape heard WAS: Dumbledore Does Lie

[Ceridwen]

No: HPFGUIDX 159049

montims:
> I've missed something.  Why was Snape there at all?  OK, he was 
following DD around, and spying for LV.  OK, he was told by LV to get 
a job at Hogwarts, and maybe this didn't displease him.  But why, 
actually, was he listening (or trying to listen) to DD interviewing 
Sybill?

Ceridwen:
My speculation.  In more than one part.

Snape is either spying for LV at this time, or he wants to discover 
something that will please LV and move himself up in the DE ranks.  
This excludes a scenario where Snape is DDM before the prophecy, btw, 
I'm leading up to answering the question.

So, Spy!Snape, either on LV's payroll and following DD on orders, or 
freelance and following DD because he is the best bet for impressive 
information, sees that his quarry has a closed-door meeting with an 
outside character.  Since his quarry is in an apparently secret 
meeting, it makes sense for a spy to try and find out what the quarry 
and his companion are discussing.  This may have some bearing on his 
master, whether he has been ordered to spy or is doing it on his 
own.  So, he spies.

DD isn't exactly young here, so there is no question of something 
untoward going on between him and the obviously down-and-out younger 
woman.  But, if there was something, it could be used against DD.  
Something like this alone would be beneficial to LV.

Spying is constant observation of a target.  Most times, it's 
boring.  Sometimes it cashes in.  Since something relevant to LV 
crops up, Snape's mission is a success.  Now, when did he turn?  
Here?  Before?  Or after, when he discovered how LV had interpreted 
the portion of the prophecy that he heard?

Ceridwen.