section_path: Definition and theory
section_name: Definition and theory
paragraph_text: Definition and theory
  
  Typically, the fictionality of a work is publicly expressed, so the audience expects the work to deviate to a greater or lesser degree from the real world rather than presenting, for instance, only factually accurate portrayals or characters who are actual people. Because fiction is generally understood as not adhering to the real world, the themes and context of a work, such as if and how it relates to real-world issues or events, are open to interpretation. Since fiction is most long-established in the realm of literature (written narrative fiction), the broad study of the nature, function, and meaning of fiction is called literary theory, and the narrower interpretation of specific fictional texts is called literary criticism (with subsets like film criticism and theatre criticism also now long-established). Aside from real-world connections, some fictional works may depict characters and events within their own context, entirely separate from the known physical universe: an independent fictional universe. The creative art of constructing such an imaginary world is known as worldbuilding.
  
  Literary critic James Wood argues that "fiction is both artifice and verisimilitude ", meaning that it requires both creative inventions as well as some acceptable degree of believability among its audience, a notion often encapsulated in the poet Samuel Taylor Coleridge 's idea of the audience's willing suspension of disbelief. The effects of experiencing fiction, and the way the audience is changed by the new information they discover, has been studied for centuries. Also, infinite fictional possibilities themselves signal the impossibility of fully knowing reality, provocatively demonstrating philosophical notions, such as there potentially being no criterion to measure constructs of reality.