It was the unusual time signature that informed the lyric to this song. Kim Thayil wasn't so much trying to tell as story as to find sounds that would work with the music, which is how you end up with "Mercurial mind the fire, ferrivorous directions and drive."
In our 2014 interview with Thayil
, he explained: "I don't just glue lyrics to music. I try to get a feel for the song, what it evokes with me."