theatlantic.com
How Google Builds Its Maps—and What It Means for the Future of EverythingMadrigal - The Atlantic
Behind every Google Map, there is a much more complex map that’s the key to your queries but hidden from your view. The deep map contains the logic of places: their no-left-turns and freeway on-ramps, speed limits and traffic conditions. This is the data that you’re drawing from when you ask Google to navigate you from point A to point B