In Pyrrhonism aporia is intentionally induced as a means of producing ataraxia. In philosophy, an aporia () is a puzzle or state of puzzlement. In Aristotle's "Metaphysics", aporia plays a role in his method of inquiry. Examples include antanagoge, apophasis, aporia, hypophora, metanoia and procatalepsis. However, in "Clitophon", aporia is reached prematurely before Socrates gives his definition. Suzette Henke has accordingly described "Finnegans Wake" as an aporia. Definitions of the term "aporia" have varied throughout history. Castle Cary is said to take half its name from River Cary, itself an aporia. There are many different interpretations as to why the dialogue ends in aporia. One aim of aporia may be to discredit the speaker's opponent. In 2017 Lily released the album Rebound on the Aporia label. Eupithecia aporia is a moth in the family Geometridae. Aporia acraea is a butterfly species in family Pieridae. Aporia hippia is a butterfly of the family Pieridae. In 2020, Sufjan Stevens and Lowell Brams release "Aporia," a 21-track album.