My wildest theory and biggest dream

[anthyroserain]

No: HPFGUIDX 133878

mgm wrote:

> Somewhere else someone asked why DD would ever wear the destroyed
> Horcrux.  I think it was just to interest Sluggy - perhaps even to
> say, "look, a destroyed horcrux.  Would you just give me the memory
> now?"  More likely he was just showing Slughorn a Slytherin 
artifact
> to break the ice.

I'd argue that it's to tap into Slughorn's sense of guilt. Slughorn 
knows that he is, indirectly at least, responsible for the fact that 
Tom Riddle was able to gain so much power and knowledge unchecked, 
and that he was the one who told Voldemort the secret to immortality.

So when Dumbledore wears the ring when first visiting Slughorn, I 
think he's saying: You know you had some hand in all this, and you 
owe me. You owe everyone.

This is also, I think, why he brings Harry along.

-anthyroserain
who was finally glad to see a Slytherin like Slughorn and not like 
Draco