The words technology and compass are similar in that they both refer to
tools which have at some point been absolutely necessary for the
advancement of human beings, be that through needing to sail the seas in
order to discover new land or launch a rocket into space to discover
new planets.
The fundamental unit that you count to gauge how good a city is not the number of people, but the number of connections.
Your answer would be 1 to me because it is the only one that makes sense