Which innovative product development approach was NOT used in creating the James Webb Space Telescope's groundbreaking capabilities?

The James Webb Space Telescope (JWST) represents one of astronomy's greatest product development achievements, pushing technological boundaries to create new observational capabilities. This poll tests your knowledge about the innovative product development approach that made this next-generation space observatory possible, highlighting how cross-industry collaboration and technical problem-solving transformed astronomical research tools.

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Microshutter array technology that allows simultaneous observation of hundreds of objects
Beryllium mirror segments with gold coating to optimize infrared performance
Quantum entanglement sensors for detecting dark matter particles
Five-layer sunshield made of Kapton with aluminum and doped-silicon coatings