Noumenal Duration

Noumenal Duration (duratio Noumenon) designates the mode of temporal existence that reason is compelled to imagine as its own horizon when it thinks through the total end of all things. In Ruda's reading of Kant's "The End of All Things," alongside Schmid's conflict between phenomenal and noumenal determinism, reason cannot simply stop at empirical, measurable time (phenomenal duration, the sequence of before-and-after governed by natural causality). Instead, reason is structurally driven to posit a form of duration that exceeds the temporal series altogether—a duration that is extemporal, outside time as we experience it, yet not simple timelessness. This is the duratio Noumenon: a mode of persisting that belongs to the noumenal order (the order of freedom, the unconditioned, the thing-in-itself) rather than the phenomenal order (the order of nature, causality, empirical succession).

The theoretical function of this concept is to prevent the collapse of the determinism-conflict into mere existentialist fatalism. If reason cannot imagine an end that is genuinely total—one that consumes even the temporal medium in which persons exist—then the struggle between phenomenal determinism (natural causality) and noumenal determinism (moral-rational self-legislation) remains a merely human predicament, an unresolvable but ultimately bearable tension. By contrast, the idea of a noumenal duration ties the subject's existence to a form of persistence that cannot be neutralized by ordinary temporal finitude; the "end of all things" must terminate this extemporal remainder as well. Thus, imagining the apocalypse is not irrational excess but a quasi-fatalist rational imperative: reason must think its own total annihilation, including the annihilation of the very durational mode in which it could otherwise survive death as a noumenal entity.

Within provocations-ruda-frank-abolishing-freedom-a-plea-for-a-contemporary-use-of-fata, the concept of noumenal duration is a pivotal hinge between the book's engagement with Kant and its broader argument for a contemporary, non-existentialist fatalism. It appears at the intersection of the cross-referenced concepts of Reason, Infinite, and Fatalism. In relation to Reason, it names the specific product of reason's totalizing drive: just as the Kantian Reason is constitutively compelled to seek the unconditioned totality of conditions—generating Ideas and antinomies in the process—here it generates the Idea of a duration that outlasts phenomenal time, only to then be compelled to imagine even that duration ending. The duratio Noumenon is thus reason's own self-produced unconditioned remainder, the thing reason must finally also cancel in its apocalyptic thought-experiment.

In relation to the Infinite, noumenal duration occupies an analogous structural slot to the "bad infinite": it is a remainder that seems to extend beyond any natural terminus, an extemporal persistence that risks becoming an endlessly deferred escape from genuine ending. Ruda's move is to insist that a truly rational, fatalist thought must sublate even this remainder—bringing it within the scope of the total end rather than leaving it as a noumenal safe harbor. This also touches the cross-referenced concepts of The Act and Repetition: the act of imagining total annihilation (including of noumenal duration) is not a pathological symptom but the very form that rational, fatalist commitment takes. The concept does not appear elsewhere in the 82-source corpus, marking it as a localized theoretical instrument in Ruda's singular argument rather than a recurrent Lacanian or Freudian category.

Abolishing Freedom: A Plea for a Contemporary Use of FatalismFrank Ruda · 2016 (p.102)

Kant assumes that it must be the 'end of all time along with the person's uninterrupted duration' and is therefore linked to the idea of a duratio Noumenon, a noumenal, ex-temporal duration.

The phrase "ex-temporal duration" is theoretically loaded because it stages a formal paradox: duration ordinarily presupposes temporal extension, yet "ex-temporal" removes it from the phenomenal time-series, leaving a persistence that is neither temporal nor simply timeless. The conjunction of "uninterrupted" (suggesting a positive, ongoing remainder) with "ex-temporal" (suggesting suspension of the very medium of that remainder) makes this the precise site where reason's totalizing drive must do its most extreme work—imagining the end of something that, by definition, could not end within ordinary time.