Built to Last: Practical Science and Infrastructure in the Indus Valley Civilization

Unlike contemporaneous complex societies that channeled material and intellectual wealth into monumental tombs and martial infrastructure, the Indus Valley Civilization (c. 2600–1900 BCE) prioritized systemic function, regional commerce, and public welfare. This paper examines the material record of Harappan urban centers, demonstrating that their scientific advancements were explicitly tethered to empirical utility rather than royal or ideological aggrandizement. Through an analysis of standardized metrological systems, high-precision linear scales, advanced hydraulic civil engineering, and sophisticated pyrotechnics, we show that the Indus people treated science as an institutionalized tool to sustain clean, efficient, and economically unified urban networks across extensive geographic spans.