The shape of future cities: Three speculations

World population has grown dramatically since the Industrial Revolution began 250 years ago. Cities are key elements in this growth, but by 2100, we will all be living cities of one size or another. Here speculate what world look like. First, represents a clean break from past composed hardly any to which is completely dominated cities. Second, continue change qualitatively as they get larger limits emerge. Third, no longer classified their internal dynamics.