It was included as the final song of side three of the LP on 19 September 1979 and written by Lindsey Buckingham, whose sparser arrangements and the influence of punk rock and new wave were the leading creative force on it and other Tusk tracks.
When recording the rhythm tracks for "I Know I'm Not Wrong", Buckingham sought to avoid the sonic quality of drums found on 1970s records.I've often looked for alternatives for the function of things such as the snare and hi-hat – anything that would get away from the norm.
[4] Cath Carroll, Fleetwood Mac biographer and author of a book on the creation of Rumours, likened the rhythm of "I Know I'm Not Wrong" to that of "The Ledge", another track from the Tusk album.
"A silly little synth riff toward the end puts an odd-sounding date stamp on the piece and is, in its perky way, the most jarring element on the album.
"[6] She noted the track's "not-quite-there quality that Buckingham manages to coax out of his higher vocal register" which is common to several Tusk songs.
[10] Matthew Fiander of PopMatters opined that "while the evolution inherent in six versions of “I Know I’m Not Wrong” seems compelling on paper, in practice none of the takes stand out".
Its first appearance was in 2003 during the fourth and final leg of the Say You Will Tour, replacing another Buckingham penned song, "Eyes of the World" in the setlist.