  This occurs in four stages. First, a long Introduction (ND 1–57) works out a concept of “philosophical experience” that both challenges Kant's distinction between “phenomena” and “noumena” and rejects Hegel's construction of “absolute spirit.” Then Part One (ND 59–131) distinguishes Adorno's project from the “fundamental ontology” in Heidegger's Being and Time. Part Two (ND 133–207) works out Adorno's alternative with respect to the categories he reconfigures from German idealism. Part Three (ND 209–408), composing nearly half the book, elaborates philosophical “models.” These present negative dialectics in action upon key concepts of moral philosophy (“freedom”), philosophy of history (“world spirit” and “natural history”), and metaphysics. Adorno says the final model, devoted to metaphysical questions, “tries by critical self reflection to give the Copernican revolution an axial turn” (ND xx). Alluding to Kant's self-proclaimed “second Copernican revolution,” this description echoes Adorno's comment about breaking through the deception of constitutive subjectivity.