The Accidental Discovery and Delayed Adoption of Metallurgy: A Field-Based Hypothesis from Uiseong, Korea

Traditional narratives often depict the transition from the Stone Age to the Metal Age as a swift sequence initiated by the singular "invention" of metallurgy. Based on field observations of exposed hydrothermal vein mineralizations in sedimentary siltstone layers at Uiseong, Republic of Korea, this paper proposes an alternative, human-centered model: The Cognitive Availability and Socio-Economic Latency Model of Metallurgy. We argue that prehistoric humans (from the Neolithic or even earlier) routinely observed and manipulated low-melting-point metals or metallic ores exposed at naturally weathered outcrops. However, the widespread adoption of metal tools was delayed for millennia—not due to a lack of cognitive recognition, but due to individual survival pressures and the mechanical limitations of unalloyed metals. Metallurgy became a social reality only when agricultural surpluses enabled specialized labor under centralized leadership, leading to deliberate bronze alloying and functional weaponry