Three minutes from the lunar surface in July 1969, the Apollo guidance computer began throwing program alarms as it drowned in data. In any normal computing scenario of the era, that meant abort. Instead the computer shed low-priority tasks, kept the landing algorithms running, and Houston said go. This deep dive explores the life of Margaret Hamilton, the mathematician and philosophy minor from Indiana whose asynchronous, priority-based architecture made that possible.

The episode follows her from weather modeling with Edward Lorenz at MIT, where her code fed into chaos theory, through the SAGE air defense project and its hazing program with comments written in Greek and Latin, to the MIT Instrumentation Laboratory where she rose to direct the software engineering division. It covers the 1202 alarm and the rendezvous radar interrupts behin ...