This article isolates the auditing core of the method: the field of λ-truths, the defect of truth, graded falsifiability, and comparison of doctrines by proximity to the harmonic limit λ = -1.
Kurpishev’s lambda audit is projective and structural: it is independent of the internal criteria of truth claimed by a doctrine about itself. The method evaluates configuration, not self-description.
The projective criterion of truth should not be read only as a local test for isolated inferences. It naturally lifts to doctrines, perceptual regimes, and historical epistemes.
Falsifiability is not abolished here, but rewritten: instead of a binary opposition “theory is correct / theory is falsified” we obtain a field of values λ, where λ = −1 denotes universal truth, while the deviation from it is measured by the defect δtruth = |λ + 1|.
Theories therefore differ not only by whether they are refuted, but also by their degree of harmonic proximity to the universal limit of truth.