[logifail]

Reminds me of this New Scientist article:

WHAT is 27 kilometres long, cost £700 million to build and can tell you precisely when trains are leaving Geneva station? https://www.newscientist.com/article/mg14820060-300-the-part...

(spoiler: the Large Electron Positron Collider at CERN)

[doodlebugging]

Great article. Thanks for that link. It is amazing to see how sensitive some of our instruments are to outside energy. I conducted gravity surveys years ago and part of the data processing always involved resolving the effects of nearby terrain since nearby density differences could contribute to an anomaly.