Tor.com’s discussion of the first Star Wars sequel, [_Splinter of the Mind’s Eye_], is a case study in how story worlds work in genre fiction. Issues of canonicity abound. Does a story fit within the “known universe” or is it consigned to an “expanded universe”? If it fits, is it made to fit by being *retconned*, which is the act of retroactively fitting a story into the continuity of a universe. Retconning has a slight negative connotation, somewhat akin to “explaining away” something. It’s the *away* that marks the difference.
[_Splinter of the Mind’s Eye_]: http://www.tor.com/blogs/2013/02/the-star-wars-sequel-that-never-quite-was-splinter-of-the-minds-eye