small city big - city - lovo SKIM high big city SKIM sman city - The world is spiky - creative people/ideas/research clusters; growing inequality both world + within country - People commute into manhattan = extreme agglomeration (firms benefit from being around firms) = firms outbid individuals for land near CBD (aka manhattan), skyscrapers, high density on valuable land - Day to night ratio highest in manhattan and lowest in closes counties as largely residential