Immunological Paradigm
ELI5
Imagine your body as a castle that fights off invaders — that's how the 20th century thought about disease and social danger: something bad comes from outside and you defend yourself. Han's point is that today's problems (burnout, depression) aren't caused by outside invaders at all, but by too much of the same thing flooding in from the inside, so the old castle-and-moat model simply doesn't work anymore.
Definition
The Immunological Paradigm, as deployed by Byung-Chul Han in The Burnout Society, designates the dominant 20th-century model of pathology organized around the logic of negativity: the threat to social and biological health is identified as the intrusion of a foreign Other, against which the organism or community must mobilize its defenses. The paradigm structures experience through a series of sharp binary distinctions — inside/outside, self/other, friend/foe — and presupposes that danger always arrives from without, from a heterogeneous alterity that must be repelled or neutralized. Illness, under this model, is essentially an encounter with the negative, with what is not-Same.
Han's theoretical move is to declare this paradigm historically exhausted. The signature pathologies of the 21st century — depression, burnout, ADHD — are not produced by the negativity of the foreign Other but by an excess of the Same: an overload of positivity, a saturation without resistance. This shifts the diagnostic frame entirely. The immunological paradigm, however powerful as a framework for earlier epochs (and however theoretically sophisticated in the versions offered by Esposito and Baudrillard), cannot account for illnesses that arise from the inside, from an abundance rather than an incursion. The paradigm's constitutive reliance on negation — on the Other as threat — renders it structurally blind to the neuronal pathologies of a society defined by surplus positivity.
Place in the corpus
In stanford-briefs-byung-chul-han-the-burnout-society-stanford-university-press-201, the Immunological Paradigm functions as the historical and theoretical foil against which Han constructs his central argument. It is the outgoing episteme — the paradigm now rendered obsolete — whose dismantling clears the ground for his concept of the Neuronal Society and the Excess of Positivity. The concept is thus positioned as the negative of Han's positive diagnosis: to name what the present is not, one must specify the immunological logic that no longer holds.
The concept's relationship to the cross-referenced canonicals is primarily one of structural contrast. Negation is the very operative logic of the Immunological Paradigm — it is constituted by the negativity of the Other, by the border that separates self from foreign threat. Han's claim is that this negation has lost its pathological productivity: contemporary society bypasses the negativity that Lacan's framework (and Hegel's dialectics) would identify as structurally necessary for the constitution of the subject and desire. Where Dialectics depends on the productive antagonism of opposed terms, and where Jouissance is classically organized around the barrier the Law erects against the Other's desire, the Immunological Paradigm represents the historical form in which such negativity was still operative at the level of social organization. The Singularity and the big Other, cross-referenced here, are both figures of radical alterity — precisely what the immunological model requires as its constitutive outside. Han's argument, then, is that the disappearance of this Other (absorbed into the frictionless positivity of the Same) marks the end of the immunological age and the onset of pathologies that classical negativity-based frameworks, including those grounded in Lacanian topology and dialectics, are not equipped to diagnose.
Key formulations
The Burnout Society (p.2)
The past century was an immunological age. The epoch sought to distinguish clearly between inside and outside, friend and foe, self and other.
The quote is theoretically loaded because its three parallel binaries — inside/outside, friend/foe, self/other — are not merely descriptive but name the structural logic of negation itself: each pair presupposes a constitutive alterity, a foreign term whose exclusion defines the identity of the first. By periodizing this logic as belonging to "the past century," Han performs a historical foreclosure of negation as an organizing principle, thereby grounding his claim that frameworks built on Otherness (immunological, dialectical, Lacanian) have reached their diagnostic limit.