In philosophy, "The Absurd" refers to the conflict between the human tendency to seek value and meaning in life and the human inability to find any. In this context absurd does not mean "logically impossible," but rather "humanly impossible." The universe and the human mind do not each separately cause the Absurd, but rather, the Absurd arises by the contradictory nature of the two existing simultaneously.
Absurdism, therefore, is a philosophical school of thought stating that the efforts of humanity to find inherent meaning will ultimately fail (and hence are absurd) because the sheer amount of information, including the vast unknown, makes certainty impossible. As a philosophy, absurdism also explores the fundamental nature of the Absurd and how individuals, once becoming conscious of the Absurd, should react to it.