Jean-Francois Lyotard: Collapse of the “Grand Narrative of Modernity” (e.g., scientific progress). Everything is questionable.
Fredric Jameson: Recycling through “pastiche” of past styles but with ironic distance. “Intertextuality” references other films and texts (implying that originality is no longer possible: we are consumers, not creators).
If there is no “novel idea” maybe the closest thing we can contribute is a new method of recombining previous ideas—a new sequence. When not enshrouded in metaphor or allegory or fiction, or linked with transitional phrases, this sequence would simply look like a collage of seemingly unconnected ideas upon which we impose a common theme.