okay, it's been well established that tool "recycle" riffs in this song. what does anyone think of the possibility that they're employing the compositional technique of self-quotation to allude to past works? composers generally do this in an attempt to bring in old programmatic ideas (in this case the "program" is in the lyrics) and integrate them as ideas related to the new work. the third eye riff is what REALLY got me looking into this possibility. when it shows up in rosetta stoned, the guitar riff is the same, but the rhythmic figures in the bass and drums are stretched, pulled and twisted to something that almost surrounds the guitar. perhaps the return of this theme is to imply that our friend on the bad trip pryed open his third eye a little too far? thoughts?