After reading / watching all the info on this page [1], I find it very hard to imagine even the tiniest reduction in cost in going from 19 insanely complex mirr

After reading / watching all the info on this page [1], I find it very hard to imagine even the tiniest reduction in cost in going from 19 insanely complex mirrors to 38, then there's all the insanely complex instruments. It might even be the case that the super specialised and expensive machines that were built to construct the telescope itself wouldn't be able to produce 2 full telescopes without being upgraded / refurbished, hence costing a lot more. Everything about this ambitious project is probably once-off for a very good reason. [1] https://www.jwst.nasa.gov/content/observatory/ote/mirrors/index.html https://www.jwst.nasa.gov/content/observatory/ote/mirrors/in...