System . Infrastructures . Resources . Governance Ethics . Culture Service Needs Functions . Outcomes . Resources . Infrastructure Product Materials Energy Technologies . Interface Functions Durability . Adaptability Material things People Context . Ecosystem impacts . What needs are met (or not met)? . Location . Materials used . Who are the stakeholders? . Policy and regulation Production . Cultures of use (e.g. behaviour, habits) . Physical infrastructures . Technologies . Key interactions with product, service or system . Environmental, social, economic issues . Materials in 'use' . Cultural / technological systems Resource flows