Excellent explanation Magua.
A bit off topic:
Back in high school, while all the other kids were writting college compositions on the signifigance of the white whale in Moby Dick, I took a crack at explaining Rorshach from the chapter "The Abyss Gazes Also..." Not an easy task, but I remember getting an A on the paper, possibly in part because it kept the teacher from reading another damn paper about Moby Dick.