yeah, thinking along these lines filenames themselves are the easiest way to display the contents of a file, and that data travels with each and every file no matter where they're mv'd to, uploaded, deployed, shared, etc.
It's like brand name packaging, all the information including nutrition packed neatly on the outside. You don't go to the store and buy 'bread' you buy '2017-08-18-00-natures-own-dbl-fiber-wheat'.
This whole pdf resonated with me because it made me realize I'd developed these almost identical practices without knowing it. Mostly over time, trial and error, and a kind of natural selection, when it comes to sake of ease.