
Psychiatrist Joseph Weiner commented that: Sociopolitical changes and scientific and technical developments have a marked influence on the delusional content in schizophrenia. A retrospective study conducted in 2008 showed how delusional content has evolved from religious/magical, to political and eventually to technically themed. The content of delusions is invariably tied to a person's life experience, and contemporary culture seems to play an important role. Persecutory delusions are, for instance, classically linked to psychosis.

These themes have diagnostic importance in that they point to certain diagnoses. The content of delusions varies considerably (limited by the imagination of the delusional person), but certain themes have been identified: for example, persecution. Delusionsĭelusions – fixed, fallacious beliefs – are symptoms that, in the absence of organic disease, indicate psychiatric disease. While these books do not share the reality-show aspects of The Truman Show, they do have in common the concept of a world that has been constructed by others. Later science fiction novels repeat the theme. Dick wrote a novel, Time Out of Joint, in which the protagonist lives in a created world in which his "family" and "friends" are all paid to maintain the illusion. Heinlein had written "They", a story about a man surrounded by persons whose job is to convince him that he is insane rather than one of the few genuine people in his world. In 1941, science fiction writer Robert A.
TIME OUT OF JOINT TRUMAN SHOW TV
This man soon learns that his life is being broadcast 24/7 to TV watchers worldwide.

The concept predates this particular film, which was inspired by a 1989 episode of The Twilight Zone in its 1980s incarnation, titled "Special Service", which begins with the protagonist discovering a camera in his bathroom mirror.
