Building 20 at MIT Innovation Story: A humble wartime lab that sparked a legacy of innovation and collaboration

Amid World War II, the U.S. urgently needed advancements in radar technology. MIT lacked adequate space, so the hastily built Building 20 became home to wartime research. This makeshift structure’s flexibility and interdisciplinary environment fostered groundbreaking collaboration, demonstrating that innovation flourishes when diverse minds and ideas interact freely.

Building 20, erected hastily during World War II to house the Radiation Laboratory, or “Rad Lab,” at the Massachusetts Institute of Technology (MIT) was initially a temporary solution for wartime research. However, it became a surprisingly effective incubator for revolutionary scientific and technological developments. Building 20’s true legacy lies in how its unique environment fostered conversation and interaction across disciplines, facilitating one of MIT’s most prolific eras of innovation.

The Necessity of Building 20

However, what Building 20 lacked in aesthetics, it made up for in flexibility. Its inexpensive materials and modular construction meant researchers could modify it with little resistance, removing walls and floors as needed to accommodate new equipment. More importantly, it enabled MIT to convene experts from diverse fields under one roof, catalyzing unprecedented collaboration and interaction.

The Power of Interaction in Building 20

One of Building 20’s defining features was its encouragement of interaction among researchers from different disciplines. Scientists, engineers, and students from fields as varied as physics, electrical engineering, and materials science worked closely. This closeness fostered frequent formal and informal conversations that cut across disciplinary boundaries. With little formal separation between different departments, cross-pollination of ideas became not just possible but inevitable.

The building’s layout and purpose led to spontaneous discussions. Researchers from one field could encounter those from another while walking through the building or working on shared problems. For example, radar researchers might run into experts in microwave technology, leading to conversations that informed both fields. The building’s “open-door” culture meant that individuals were constantly exposed to diverse ideas, creating a laboratory for intellectual serendipity. This environment exemplifies how the practices emphasized in Conversational Leadership can create fertile ground for innovation through the free flow of ideas and collaboration across boundaries.

The Role of Conversation in Innovation

Building 20 exemplified how informal conversations can spark innovation. In such a densely collaborative environment, people could share their findings, curiosities, doubts, and problems. These shared dialogues often broke down the formal hierarchies that can inhibit communication in research settings. Junior researchers, students, and senior scientists alike engaged in these discussions, democratizing knowledge and making innovation accessible to all levels.

The frequency of conversation in Building 20 also accelerated the feedback loop for experimentation. When engineers encounter an issue with an experimental setup, they can seek input from a physicist down the hall. If an electrical engineer discovered a novel application for a device, they could explain it to a materials scientist working nearby. This “low-stakes” conversational exchange created a unique environment where ideas could be tested, improved upon, or pivoted without fear of failure or judgment.

A “Magical” Building

The physical structure of Building 20’s flexibility matched that of its occupants. Since it was intended as a temporary structure, there was little bureaucratic oversight on how researchers could modify the space. Researchers drilled holes in walls, knocked down partitions, and rewired circuits at will. This freedom to reshape the environment reinforced the sense that the building was not a formal research facility but a giant “experimental playground.”

Building 20 evolved from a radar research lab to a space where researchers could explore emerging fields as the war ended. Following the Rad Lab’s success, MIT assigned other departments to the building, including linguistics, cognitive science, and acoustics. Each of these groups found the space ideally suited for exploratory research. By the postwar years, Building 20 housed a who’s who of innovators, including those working on cutting-edge advances in computer science, artificial intelligence, and nuclear engineering.

The Adjacent Possible at Building 20

Biologist Stuart Kauffman coined the term adjacent possible to describe the set of all next-step innovations that become accessible when existing elements are combined in new ways. Building 20 thrived as a laboratory of the adjacent possible—not only in the technological breakthroughs it housed but in the way its physical and social environment continually expanded the realm of what was thinkable and doable. Its open, makeshift design and its mix of disciplines made it easier for researchers to stumble upon the next possible thing that hadn’t yet been imagined. The proximity of minds from different domains allowed ideas to leap boundaries and merge into novel possibilities, showing that innovation is less a flash of genius and more a product of evolving connections in the right conditions.

Legacy of Building 20

The innovations that emerged from Building 20 changed the world. The building played a pivotal role in the development of radar, which revolutionized air defense during the war and laid the groundwork for future aerospace technology. After the war, the groundbreaking research conducted in Building 20 laid the foundation for new disciplines such as linguistics and cognitive science.

However, perhaps the most important legacy of Building 20 was its embodiment of the power of conversation, interaction, and interdisciplinary collaboration in innovation. This seemingly unremarkable building demonstrated that groundbreaking ideas often result from open and frequent dialogue. It showed that innovation thrives when individuals with diverse perspectives and expertise share space, time, and purpose, allowing for ideas to merge, adapt, and evolve.

Many universities and research institutions today attempt to replicate the “Building 20 model,” designing spaces that encourage interdisciplinary collaboration and informal interaction. MIT has incorporated these principles into new buildings, aiming to preserve the spirit of Building 20’s intellectual community.

Conclusion

Building 20 was, in essence, a crucible of innovation, forged in the high-pressure context of World War II but sustained by the free flow of ideas and interaction among brilliant minds. This makeshift structure proved that innovation does not require state-of-the-art facilities or lavish design but rather the opportunity for people to interact, converse, and question together. It was through these conversations—these spontaneous, boundary-crossing exchanges—that Building 20 earned its reputation as “the magical incubator.” Its legacy reminds us that meaningful conversation and interaction are at the heart of every great leap in human knowledge.

Building 20’s success shows that innovation thrives in flexible, collaborative spaces. We should prioritize structures that encourage open dialogue and interdisciplinary teamwork to create similar environments. Design spaces where ideas can flow freely and people feel empowered to share and adapt concepts across fields—small actions that lead to big breakthroughs.

Resources

• Article: MIT Building 20
• Article: Serendipity: When Walls Get in the Way
• Book: MIT Building 20: Short Stories

Innovation Stories

1. Building 20 at MIT Innovation Story: A humble wartime lab that sparked a legacy of innovation and collaboration
2. Coffee House Innovation Innovation Story: The London coffee houses that fueled conversation, innovation, and societal shifts
3. Rules of the Garage: Reigniting Innovation at HP Innovation Story: How Carly Fiorina’s Manifesto Modernized the HP Way
4. Silicon Valley Versus Route 128 Innovation Story: How Silicon Valley's open culture outpaced Route 128's closed network
5. The Birth of Uber Innovation Story: How everyday frustrations and collaboration shaped Uber’s global transformation
6. The Google 20% Free Time Policy Innovation Story: A catalyst for innovation
7. The House of Wisdom Innovation Story: An Islamic beacon of innovation and collaboration
8. The Pixar Way Innovation Story: Lessons from Pixar on blending ideas, technology, and storytelling