Quirrell & Voldemort (was Re: Marauder's map question, prior to PoA)

[Cristina Angelo]

No: HPFGUIDX 191998



--- In HPforGrownups at yahoogroups.com, Bruce Mull <bpmull at ...> wrote:
>
 
> Bruce:
> None of the rooms that were unknown to the map builders, or are
> not always there, would show up. This is true. However, the
> question is really whether or not if a person is possessed of
> more than one spirit (soul or partial soul) what would show up
> on the Map. Specifically, would Tom Riddle show up as part of
> Quirrell, or only Quirrell?
> 
> It seems that only Quirrell must have shown up. Riddle's soul
> was so fragmented by his evil that it may not have been
> recognizably human. In fact, we get the sense from many of the
> books -- even way back in Book 1 when Hagrid is talking to Harry
> -- that Riddle is not human anymore. This could be why he did not
> show up on the Marauder's Map.
> 
> Dr Bruce P. Mull
> Professor of Computer Science
> Professor of Mathematics
>

That may be the best magical explanation. Animals appeared, but not ghosts, iirc. Riddle was not a ghost, but he was probably something in between a human and a ghost - 1/7th of a soul, and physically... whatever it was (it's probably been debated here in the many years this group has existed). The dark magic involved in achieving that state was most likely beyond anything the Marauders could comprehend. For instance, as mentioned here, the Marauders weren't able to "program" the map to recognize the kind of magic necessary to recognize the Room of Requirement (not saying it was dark, only that it was too advanced).