I teach a class on basic web technologies to Marketing students, and I always enjoy talking about DNS there. It is a fun concept to explain, that a text file, q

I teach a class on basic web technologies to Marketing students, and I always enjoy talking about DNS there. It is a fun concept to explain, that a text file, quite literally, is the backbone (phonebook) to the entire internet as we use it today. Anyone who gets to mess with the phonebook, has power. At the same time, nobody stops you from using your own copy of it. If the government decides to mess with the phonebook (like it does in many countries around the world), you simply use someone else's phonebook, or your own copy (or even just the edits/overwrites - i.e. the hosts file).