The Maya Zero: How Nothing Changed Everything

Before the Maya, the concept of zero was virtually unknown in the ancient world. This episode dives into how Maya mathematicians and astronomers developed zero independently—centuries before it appeared in India or the Middle East. We explore the earliest known use of zero in the Americas, found on a stela at the site of Tres Zapotes dating to 36 BCE. Lucas and Luna discuss the Long Count calendar, the base-20 vigesimal system, and the place-value notation that allowed Maya scribes to track vast cycles of time. They examine zero's role beyond arithmetic: as a philosophical and cosmological concept tied to the void before creation, reflected in the Popol Vuh. The conversation also touches on the controversies around decipherment, including the work of John Justeson and the debate over whether zero was a borrowed idea or a true invention. Special attention is given to the glyph for zero—a shell-like symbol—and its appearance in the Dresden Codex. The episode concludes with reflection on how zero enabled Maya astronomy to reach stunning precision, from eclipse predictions to the Venus tables, and how its loss after the conquest set back science in the Americas for centuries.

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