In 1998 the Swiss Federal Institute of Technology in Zurich (ETHZ) proposed a provocative and challenging idea: the primary energy consumption of everyone in Switzerland could be reduced to 2000 watts per person per hour without negatively impacting their quality of life. In a referendum in 2008, 76% voted to make Zürich a 2000watt society by 2050, which would mean reducing the primary energy consumption by two-thirds. Is this remotely possible given that historically GDP and energy consumption scale linearly? And how does one go about this? Discuss.