===Theories===
There In the album's [[Year_Zero#Alternate_Reality_Game|alternate reality game]], there is a theory that "Vessel" is about [[John Ferminger]]. In the transcript of his discussion with the facility member he mentions that he is a vessel for the truth. Another theory is that the song is about pills given to US soldiers to counteract the effects of [[Parepin]] or [[Opal]]. ("When I put you inside of me, none of that matters anymore" and "I am turning into God" suggests this.)
==Appearances==