Off topic, but it reminds me of another principle: every geographic heatmap is just a population map. https://xkcd.com/1138/
That, or https://i.redd.it/soy72dye93o91.jpg
https://reddit.com/r/PeopleLiveInCities/
Yep, every time I see a heatmap of Australian lotto winners - very high correlation with Australia's population.
That, or https://i.redd.it/soy72dye93o91.jpg