The song "Knowledge" by Operation Ivy reflects a sense of uncertainty and confusion about the future. The opening lines suggest that things are becoming increasingly difficult, as illustrated by the metaphor of not being able to get the top off the bottom of the barrel. The "Wide open road to my future" is now "looking fuckin narrow," indicating a sense of entrapment or limitation.

The repeated refrain of "All I know is that I don't know nothing" emphasizes the narrator's lack of certainty and understanding about the world and their place in it. The lyrics suggest that others might try to pressure the narrator into making definitive decisions about their future, but the narrator acknowledges their own propensity to change their mind.

The lines "What you gonna do with yourself boy / Better make up your mind / What you gonna do with yourself Boy / Running out of time" convey a sense of urgency and pressure to make decisions about one's life before it is too late.

The song ends with the line "And that's fine," suggesting a resignation to the uncertainty and lack of knowledge. Overall, the lyrics of "Knowledge" convey a sense of anxiety and confusion about the future, set against the backdrop of societal expectations and pressures to make definitive decisions about one's path in life.