OoTP Question/HBP

[finwitch]

> Andromeda now:
> 
>   Another agreement - I thought "Regulus" as soon as I read it --
> seemed a pretty obvious possibility- so I was suprised none of the 
> trio thought of him.

Finwitch:

Why should they? Sirius *told* them his brother was killed - on 
Voldemort's orders (as Sirius doesn't think Voldemort considered him 
worthy to be killed by Voldemort in person...). Why would they consider 
Sirius' dead brother to be in his place? Metamorphmagus maybe...

But I have another question - JKR confirmed that the Order does indeed 
use Patronuses to deliver messages -- why didn't they teach Harry how 
to do that??? The main problem - particularly in the end of OOP was 
that Harry hadn't a reliable source of communication at hand - (Rowling 
also said that the mirror wouldn't have helped as much as Harry thought 
it would have...) and I haven't got my hands on HBP yet, but...

Finwitch