Amazing. Quantum background noise can alter the position of a macro-sized object, in this case a 40 kilogram mirror at LIGO. This means that quantum randomness can affect human-scale phenomena. Holy Schrodinger!
https://phys.org/news/2020-07-quantum-fluctuations-jiggle-human-scale.html
https://phys.org/news/2020-07-quantum-fluctuations-jiggle-human-scale.html
Quantum fluctuations can jiggle objects on the human scale
The universe, as seen through the lens of quantum mechanics, is a noisy, crackling space where particles blink constantly in and out of existence, creating a background of quantum noise whose effects are normally far too subtle to detect in everyday objects.