The Ouroboros of Being: A Philosophical, Scientific, and Ethical Investigation into Life as an Eternal Loop

VERSION 3, AUGUST 2026 — revised and expanded: five new sections (the unobservable loop; authorship without libertarian free will; recurrence with memory; the Judge Problem; the creator's seat), two new preludes, three figures, and a fully corrected, independently verified reference list. This paper synthesizes Friedrich Nietzsche's doctrine of eternal recurrence with modern physics, ethics, and speculative biology to examine existence as an eternal, identical loop — the "Ouroboros of Being." It opens from the arithmetic of self-location: an existence whose prior probability approaches zero and whose posterior is unity. Rooted in Nietzsche's "heaviest weight," the analysis situates the doctrine against its ancient and Eastern counterparts (Eliade's regenerative cycles, Stoic palingenesis, karmic spirals) and advances an underdetermination thesis: because no memory crosses the seam between iterations, the loop's cardinality is unobservable from within — a circle run once and a circle run forever are experientially identical, which is why the doctrine can only function as an existential test, never as a discovery. Physical resonances are developed through the block universe and closed timelike curves under Novikov self-consistency, with finite-state simulations demonstrating recurrence in bounded systems. Ethically, the paper reconciles the loop's annihilation of blame with its infinite amplification of weight through a concept of authorship — answering Kundera's einmal ist keinmal with the counter-thesis that once is everything — and answers the petrification of injustice with the observation that human institutions are engineered loops with memory, democracy foremost among them. A trilemma on the Judge Problem (external arbiter, no arbiter, or the self as strange loop) is developed alongside an executable thought experiment from the creator's seat of a bounded artificial agent. Speculative biology frames the zinc spark at conception and the gamma-wave surge at death as informational bookends of the instance, against the uncontroversial recurrence-by-descent of the pattern. The theory ultimately challenges us to affirm fate amid uncertainty, fostering care for life in the present.