What kind of population is Hong Kong planning for? That is the question the chief executive’s policy address must tackle as the Northern Metropolis begins to take shape.Much more than just another new town, the Northern Metropolis is Hong Kong’s most consequential project for its next phase of development, expected to house 2.5 million residents and provide 650,000 jobs. The numbers are well known, but they are not the story.This population of 2.5 million will be like no other. The Northern...