Why do some working prototypes still fail when they reach production?

This is episode 329 and the second part of our discussion on this topic, and Adrian and Paul move from the general prototype-to-production gap into real-world failure patterns that can derail a product launch. They look at 3 common scenarios:

You’ll hear why a cheaper component that looks identical on paper can still cause major problems, why every firmware change needs to be tested and documented, and why a factory transfer should never be treated as a simple handover.

The episode also explains how a structured NPI/MPI process, production-representative builds, configuration control, phase gates, pilot runs, and factory process audits help reduce the risk of production failure.

The key message: a prototype proves the concept, but production proves the process. Before approving production, you need to know exactly what was validated, what configuration it applied to, and what has changed since.

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