Which innovative product development approach was NOT used during the creation of the James Webb Space Telescope?

The James Webb Space Telescope (JWST) represents one of the most ambitious product development projects in human history. This engineering marvel required innovative solutions to unprecedented challenges, from its revolutionary folding design to its ultra-sensitive infrared instruments. Test your knowledge about how this groundbreaking observatory moved from concept to reality through decades of research, testing, and refinement.

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Cryogenic testing in a massive vacuum chamber to simulate space conditions
Development of a new gold-plating process for the telescope's beryllium mirrors
3D printed primary mirror segments to reduce manufacturing time
Creation of a five-layer sunshield that unfolds in space to protect sensitive instruments