Residents of established middle suburbs are slowly coming round to the idea, but governments and the property sector lack the capacity to deliver compact cities that are acceptable to the community.
Cosmologists are heading back to their chalkboards as the experiments designed to figure out what this unknown 84 percent of our universe actually is come up empty.
Planners wish to correct past errors by increasing densities, discouraging car dependency and mixing land uses. But imposing imported strategies on Australian cities is producing unhappy results.
In the push for more compact cities, don't forget the ways apartment living is different. And often the downsides of these differences weigh heavily on low-income and disadvantaged households.