Broad Band: The Untold Story of the Women Who Made the Internet: Summary & Key Insights

The story begins with Ada Lovelace, often mythologized as the world’s first computer programmer. I approach her not as a legend but as a foundational philosopher of computation. In the early nineteenth century, working alongside Charles Babbage on his Analytical Engine, she imagined a machine that could manipulate symbols, not just numbers—a vision that anticipated the logic of modern computers and software. Lovelace’s writings are suffused with the poetic imagination of someone who saw art and science as inseparable. She called the Analytical Engine a tool that could weave patterns from numbers just as the Jacquard loom weaved flowers and leaves onto fabric. Her insight—that computation could extend beyond calculation into creativity—set a precedent for generations of women who would find in computing a field of artistry as much as engineering.

As the story moves into the early twentieth century, we encounter women working as human computers—teams of mathematically trained women who calculated artillery trajectories, astronomical data, and wartime logistics. These women performed the algorithmic labor before machines existed to do it. Their repetitive, exacting work built not only the wartime engines of intelligence but also the conceptual foundations for electronic computing. Yet for all their precision and innovation, their names vanished from the official record. By tracing their presence, I wanted to make visible the hidden economies of intellect that sustained early technology.

World War II catalyzed a radical acceleration in computing. In the middle of that upheaval stood the ENIAC—an enormous machine often called the first general-purpose electronic computer. But behind its blinking lights were six women: Jean Jennings Bartik, Betty Snyder Holberton, Marlyn Wescoff Meltzer, Ruth Lichterman Teitelbaum, Kathleen McNulty Mauchly Antonelli, and Frances Bilas Spence. These women were tasked with programming ENIAC, although at the time “programmer” was not yet a defined profession. With no manuals, no precedent, and no formal recognition, they deciphered the logic of the machine by studying its wiring diagrams. They turned raw circuitry into abstract thought.

I want the reader to sense the ingenuity this required. Each woman treated the 18,000 vacuum tubes and 40 panels of ENIAC as a living puzzle. They learned to sequence operations, debug malfunctions, and design routines that automated calculations once done by hand. In the process, they invented methods of abstraction that shaped all software design to follow. Yet their contributions were erased when the ENIAC was publicly unveiled; they were not even invited to the celebratory dinner. To tell their story is to expose how brilliance has often been hidden behind the machinery of institutional credit.

Bartik later said that they didn’t think of themselves as pioneers then—they were just solving problems. That humility and rigor embody what *Broad Band* seeks to honor: a tradition of women solving essential problems quietly, expertly, and often without reward.