possible points of discussion:
-lain's nature, history, and health
-which scenes can be considered real events and which scenes are metaphors (including illustrations of exchanges over the Wired)
-the nature of the Psyche/pushuke computer chip
-Professor Hodgeson's psychic research and its possible relation to seemingly psychic phenomenon in the anime (if they are real events and not metaphors)
-whether or not Schumann Resonances truly have anything to do with the Wired Protocol 7
-lain's development as a character, especially towards the very ending of Layer:13
-lain's nature after the events of Layer:13
-the significance of dolphins (if any) and their connection to arisu/alice
-lain's family's conspiration with Tachibana Laboratory
-veracity of each of Eiri's claims