Economies of learning refer to the value derived from serendipitous interactions. People learn from each other, through both intentional meetings and chance encounters. Learning through intentional meetings may occur wherever people seek each other out. But learning through chance encounters will happen more frequently in dense urban areas where there are simply better odds of encountering other people. As a result, companies and workers will prefer to locate in cities where they can command higher profits and wages associated with the learning that occurs through serendipitous interactions. … [Read more...] about COVID-19 won’t kill cities