Poor snivelling little Peter

[Jon]

No: HPFGUIDX 53468

Marianne wrote:

"Making the switch was to create confusion. Voldemort and his minions 
were likely to try to find Sirius because he was the logical choice 
of Secret Keeper. Okay, then Sirius becomes the first line of 
defense for both Peter and the Potters by acting as a decoy. If they 
never find him, everyone stays safe, relatively speaking. If he's 
caught and dies under torture without giving up any information, then 
he's succeeded in protecting not only the Potters but Peter." 

I add:

Maybe he could do more than just protect them, too.  Say Sirius is 
captured, and thought to be the Secret-Keeper.  Would he want them to 
be able to say, "Well, we caught the wrong guy; I wonder who else it 
might be?"  No.  IMO, he'd probably try to resist the torture as long 
as possible, and if he had to, he could reveal a false location for 
James and Lily's house: a location which actually holds several 
squadrons of highly trained Aurors ready and willing to stupify any 
who enter.  Thus, if Sirius is never caught, Dumbledore and crew 
don't lose anything.  If he IS caught, Dumbledore loses a faithful 
friend and agent, but gains an opportunity to ambush most, if not 
all, of the DEs who come to kill J and L.

Of course, Dumbledore didn't know about it, so this is all pretty 
much impossible, isn't it?

Hobbit-guy (who should know by now not to theorize with incomplete 
facts.  Curse that JKR for making us wait!!)