Картезианский театр и бесконечный гомункулус в голове | Владимир Алипов

The lecture begins with the speaker introducing the concept of the 'Cartesian Theater,' a metaphor deeply tied to theories of consciousness. The core idea, rooted in Descartes' dualism, is that the brain has unconscious processes occurring 'behind the scenes,' and consciousness emerges when certain processes 'step onto the stage' — into the spotlight — where an immaterial observer (a homunculus, or soul) located perhaps in the pineal gland can perceive them. This creates a dualistic picture where what happens on stage is conscious, and what happens backstage is unconscious.

The speaker then identifies the major philosophical problem with this model: it generates an infinite regress. If the homunculus observes the stage and thereby has its own qualia (subjective experiences), then something must explain the qualia of the homunculus itself — implying a smaller homunculus inside it, and so on infinitely. This is Dennett's critique of the Cartesian Theater, which the speaker references.

Despite this flaw, the speaker acknowledges a positive dimension to the theatrical metaphor: it correctly separates unconscious localized processes from those that become globally accessible. This maps onto what neuroscience shows about the neural correlates of consciousness — localized brain activity that, under certain conditions, spreads broadly across the brain and reaches a conscious level.

The speaker then connects this to Bernard Baars' Global Workspace Theory, which was initially formulated as a psychological (not neurophysiological) model. In this theory, separate cognitive modules operate independently, and information occasionally 'jumps' onto a shared global workspace — the equivalent of the theater stage. Crucially, the speaker emphasizes that this theory explicitly disclaims phenomenal consciousness, focusing instead on access consciousness, which sidesteps the homunculus problem. He concludes with a refined metaphor: the Global Workspace is like a theater without an audience — there is a director, lighting crew, and actors interacting, but no separate observer is needed to make the system work.