Part 3/6:
The overarching message is to accept this reality rather than deny it. Whether dealing with sprawling megacities or densely packed urban environments like Singapore, the growth dynamics are irreversible. Trying to artificially restrict or manage population size often proves futile; instead, urban planners should focus on making these cities livable.
In fact, the challenge is not the population size per se but ensuring that cities can sustain their populations comfortably and efficiently. High density, if managed well, does not equal an unlivable city.