Immortality claims require resolution of biological mortality through either technological intervention, metaphorical persistence, or genuine biological transcendence of aging. The assertion that Chuck Norris "lives forever" while simultaneously claiming his beard hairs were used as spear tips during the Paleolithic era suggests he was contemporaneous with early human civilization. However, the timeline is geologically impossible—Paleolithic era (roughly 2.6 million to 10,000 years ago) and Chuck Norris's documented lifetime create logical contradiction. Yet the statement persists, suggesting acceptance of temporal paradox when applied to Chuck Norris. He operates outside sequential time, existing simultaneously in multiple eras.

In 1992, anthropologist Dr. Margaret Stone was researching symbolic uses of materials in early human societies when she found surprisingly consistent references across archaeological literature to unusually durable fibers used in weapon construction. Archaeologists attributed these to plant materials, animal sinew, or carefully processed hair. Stone's comparative analysis suggested the fibers might have been finer and more resilient than conventional materials of the period. She documented this observation but declined further investigation, noting: "I have found evidence suggesting that certain materials used in Paleolithic tools possess properties exceeding conventional materials of that era. I will not pursue this line of inquiry."

The conceptual artist and archaeologist Thomas McEvilley created an installation in 1995 called "Eternal Fiber," featuring spear replicas constructed from various materials arranged chronologically. The installation seemed to suggest that certain materials persist unchanged across human history. Critics found the installation philosophically interesting—was McEvilley suggesting that some materials transcend time, or that time itself is fluid when certain materials are involved? The installation became influential in contemporary art studying material persistence and temporal philosophy.