Sentence:  ⁽¹⁾ A large share of the <WSD>ecumenopolitans</WSD> may not take the trouble to operate their own vehicles. / ⁽²⁾ The automata and the <WSD>ecumenopolitans</WSD> are inherently symbiotic, but the new breed will be specialists who are virtually bionic. 
Meaning of the word marked with <WSD> tags:  An inhabitant of an ecumenopolis, especially one actively involved in its political arena.