Its a nice bit of tech. 73M in construction costs. The ‘hat’ which is the focal plane instrumentation weighs approximately 10 tonnes. It accommodates 5,000 small computer controlled fiber positioners. The entire focal plane can be reconfigured for the next exposure in less than two minutes while the telescope slews to the next field. The DESI instrument is capable of taking 5,000 simultaneous spectra of different Galaxies

Also, for those concerned that Human brains have shrunk over the last thirty thousand years, there is good news: A large-scale study published in March 2024 by researchers at UC Davis Health found human brains have been getting larger over the last few decades. Study participants born in the 1970s had 6.6% larger brain volumes and almost 15% larger brain surface area than those born in the 1930s. This steady increase for people born after the 1930s, is believed to be due to better nutrition. https://health.ucdavis.edu/news/headlines/human-brains-are-getting-larger-that-may-be-good-news-for-dementia-risk/2024/03