While limiting, if you're in a world city with huge population density you can still reach a lot of people. Suppose you live in a high rise, you can reach all t

While limiting, if you're in a world city with huge population density you can still reach a lot of people. Suppose you live in a high rise, you can reach all the people in the buildings across from you, in the cafe down below, offices in the other building across from you, etc.