Knowledge can refer to a theoretical or practical understanding of a subject. It can be implicit (as with practical skill or expertise) or explicit (as with the theoretical understanding of a subject); it can be more or less formal or systematic. In philosophy, the study of knowledge is called epistemology; the philosopher Plato famously defined knowledge as "justified true belief", though "well-justified true belief" is more complete as it accounts for the Gettier problems. However, several definitions of knowledge and theories to explain it exist.
During the opening of the song at Operation Ivy's last show at Gilman St. (which was released on the "Lint Rides Again" bootleg), Michaels opens the song by saying that "this song is called 'Knowledge', and it's about growing up."
Popularity and covers
The song is one of the most popular songs by Operation Ivy, and has been covered by many artists, including a notable cover by fellow Berkeley musical trio Green Day on their EP Slappy (also featured on the compilation album 1,039/Smoothed Out Slappy Hours). When Green Day performs the song live, fans are invited to come on-stage and play instruments.
The Aquabats recorded a cover for the Operation Ivy tribute album Take Warning: Songs of Operation Ivy.