Noun

Lack of relationship with the topic at hand; lack of importance.

*{{quote-magazine, date=2013-06-07, author=David Simpson

, volume=188, issue=26, page=36, magazine=(The Guardian Weekly) , title= Fantasy of navigation , passage=It is tempting to speculate about the incentives or compulsions that might explain why anyone would take to the skies in [the] basket [of a balloon]: […];  […]; or perhaps to muse on the irrelevance of the borders that separate nation states and keep people from understanding their shared environment.}}