what? these theatres of shadow have no backstage?

is the status of consciousness purely epiphenomenal from the causal standpoint or does it display a causality of its own? It would be interesting to confront Deleuze with these naive questions: is the level of Sense-Event just a sterile effect, a theatre of shadows? Does it somehow affect the level of the corporeal network of causes or can this latter level be described without regard for the flow of Sense?

– Slavoj Zizek (OwB, p. 113)