Long TextExercici 19 de 74

James Baxter reviews two books about the internet: Rewire by Ethan Zuckerman, and Untangling the Web by Aleks Krotoski. Open a street map of any city and you see a diagram of all the possible routes one could take in traversing or exploring it. Superimpose on the street map the actual traffic flows that are observed…

• The reviewer starts with the metaphor of a city map in order to illustrate...
• What do the words 'that test' in line 13 refer to?