EconTalk How Did America Build the Arsenal of Democracy? (with Brian Potter)
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Sep 15, 2025 
Brian Potter, a structural engineer and writer at the Institute for Progress, dives into America's aircraft production during WWII. He shares how the U.S. became a manufacturing powerhouse, producing B-24 bombers in under an hour. Potter discusses the challenges of ramping up production, the balance of precision and improvisation, and the critical role of women in factories. He reflects on lessons from this era for today’s supply chain debates and defense readiness, highlighting the importance of preparation and proactive decision-making for future mobilization efforts.
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Process Over Craftspeople
- Manufacturers shifted knowledge from skilled workers' heads into standardized processes to let unskilled labor build airplanes.
- The workforce composition (many women, many novices) drove the choice of production methods and tooling.
Relentless Inspection Regimes
- Pratt & Whitney and Ford inspected engines thousands of times; some plants had 20% of staff as inspectors.
- They ran engines long, disassembled and re-inspected every part to ensure reliability at performance limits.
Production Control Became Critical
- Constant design changes in wartime meant factories couldn't freeze designs and had to build robust production-control systems.
- Successful mass output required inventing information systems to track change orders and material flow.