ABSTRACT
Interaction and movement of goods and people are fundamental to the very existence of a ‘space economy’ and a ‘space society’. Non-subsistence economies produce goods and services above and beyond local needs, and exchange the surpluses in the market-place for those available elsewhere. Whether the customers, or the items they purchase move, interaction is an inevitable concomitant of economic progress. Equally, the separation of workplace and home generates major daily pendulum flows of commuting traffic to and fro between them, while elsewhere in advanced societies personal movement is driven by social desiderata of a particular life style and a widely cast network of friends and relations to visit.
