Original Sin as Philosophical Typology
ELI5
Every major philosophical school secretly tells a story about what humanity lost or got wrong at the beginning — nature, equality, contact with Being — and the whole philosophy is basically a plan to fix that original mistake. Žižek is pointing out that the kind of philosopher you are depends on which "original sin" story you secretly believe in.
Definition
In this passage from Žižek's Less Than Nothing, "Original Sin as Philosophical Typology" names a heuristic for classifying philosophical positions by the narrative of primordial loss or deviation each one presupposes. The theoretical move is to treat the structural doctrine of the Fall — a pre-lapsarian wholeness, a rupture, and the task of recovery or reckoning — not as a theological claim but as the hidden axiom that organizes every philosophical project's diagnosis of what went wrong and what must be undone. Each school of thought tacitly posits its own version of original sin: for ecology it is the Cartesian bifurcation of subject and mechanized nature; for Marxism it is the institution of class division and the separation of producers from their product; for Heideggerianism it is the Seinsvergessenheit, the forgetting of Being that inaugurates the metaphysical tradition. The typology thus maps philosophical orientations onto the particular "Fall" they identify as constitutive of the present crisis.
This move is not merely rhetorical. By formalizing the Fall-structure as the deep grammar of philosophical commitment, Žižek suggests that what distinguishes philosophical schools is not primarily their positive content but the negative — the specific site of originary loss each one privileges and the corresponding emancipatory gesture it prescribes. The concept is contrastive: it is introduced in the context of distinguishing the Lacanian Real (as ontic-without-ontological, "given without givenness") from Heideggerian epochal historicity, itself cast as an inversion of Kantian transcendentalism. In this frame, Heidegger's Fall (forgetting of Being) is exposed as one typological option among several — thereby relativizing and undermining its claim to uniqueness or philosophical primacy.
Place in the corpus
The concept appears in slavoj-zizek-less-than-nothing-hegel-and-the-shadow-of-dialectical-materialism-v as a passing but structurally significant typological device deployed in the course of a larger argument contrasting the Lacanian Real with Heideggerian ontology. The Real, defined in this source as "given without givenness" — the ontic without the ontological — has no place in Heidegger's thought precisely because Heidegger's entire framework is organized around the ontological difference and the epochal narrative of Being's withdrawal. By exposing that framework as one instance of a general "original sin" typology, Žižek performs a symmetrical reduction: Heidegger's Kehre (the turning away from metaphysics toward the truth of Being) appears as the specific emancipatory gesture prescribed by the Heideggerian Fall-narrative, rather than as the singular philosophical event Heidegger claims it to be.
Relative to the cross-referenced canonicals, this concept functions as a critical specification. The Lacanian Real — irreducible remainder that escapes all symbolization, the site where the Symbolic hits its structural limit — is implicitly contrasted with what each philosophical "original sin" posits as its missed plenitude (nature, classless society, presencing of Being). Where the Real insists on an absence that was never a presence, the Fall-narratives each presuppose a lost fullness that must be recovered or mourned. The concept thus operates as an immanent critique of Phenomenology insofar as phenomenological method (especially in its Heideggerian form) is shown to be secretly committed to a Fall-story — the forgetting of Being — which functions as its hidden motivating axiom. The typology does not engage Vicissitude directly, but a structural resonance exists: just as Freudian vicissitude names the possible fates of the drive within a structured psychic economy, philosophical typology by original sin names the possible fates of the foundational rupture within different theoretical economies — each school "processes" its constitutive loss differently.
Key formulations
Less Than Nothing: Hegel and the Shadow of Dialectical Materialism (page unknown)
the kind of philosopher one is depends on the kind of theory of original sin (the Fall) one upholds. Does not the same hold today? For ecologists, the 'original sin' is the Cartesian domination over a nature reduced to mechanical object; for Marxists, the Fall is the rise of class society; for Heideggerians, the Fall is the forgetting of the truth of Being
The phrase "the kind of philosopher one is depends on the kind of theory of original sin one upholds" is theoretically loaded because it reframes philosophical identity not as a set of positive doctrines but as a structural commitment to a particular narrative of originary loss — making the Fall-structure, rather than any substantive claim, the differentiating axiom. The three examples (Cartesian domination, rise of class society, forgetting of Being) are then immediately rendered equivalent and interchangeable, which is precisely the deflationary move that allows Žižek to relativize Heidegger's privileged claim to have diagnosed the foundational rupture of Western thought.