Which innovative product development approach was NOT used in the creation of the James Webb Space Telescope's revolutionary gold-coated beryllium mirrors?

The James Webb Space Telescope (JWST) represents one of the most ambitious product development projects in astronomical history. This engineering marvel required innovative solutions to unprecedented challenges, involving collaboration between NASA, ESA, and CSA. Test your knowledge about the development journey of this revolutionary space observatory that's changing our understanding of the universe.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Cryogenic testing at -233°C to ensure performance in space conditions
Machine learning algorithms to autonomously adjust mirror alignment in orbit
Hexagonal segmentation to allow folding for launch and deployment in space
Vacuum vapor deposition to apply the 100-nanometer gold coating