itsetäyteisiä

Itsetäyteisiä is a Finnish neologism used to describe objects, systems, or narratives that appear to fill themselves with content or meaning, i.e., self-generated or self-sufficient in their content. The word is a compound of itse 'self' and täyte 'filling', with the adjectival ending -inen and the plural form -isiä, producing itsetäyteisiä. The term is relatively new and not widely standardized, and its usage remains confined to contemporary Finnish-language discourse and some speculative fiction.

In conceptual use, itsetäyteisiä refers to processes or artifacts that require little external input to produce complex outputs—such as autonomous content generation, self-updating data narratives, or media that adapt their narrative as they "fill" themselves with new material. Critics note that the label can be imprecise, since many systems are semi-automated or reliant on underlying human design, and "self" can be a misleading simplification.

Examples are primarily found in theoretical discussions or fictional works. For example, a narrative game that procedurally generates lore and quests as it runs could be described as itsetäyteisiä. In academic and media-creative contexts, the term is sometimes contrasted with handcrafted or externally curated content.

See also: autogenerative, self-contained systems, autotelic design.