 In order to remain a reputable source, Lostpedia follows a "theory policy", which discriminates between canonical and non-canonical sources, and the various canonical sources are ranked to determine which supersedes which in the case of a contradiction.In each article, canonical facts are listed under a "Facts" heading, while speculation, provided it is logically consistent and not discredited or disproved, is listed under a "Theories" heading.Erroneous information is not permitted at all.