scrutinized in detail" which could prompt or be necessary for an "organization of an alternative society" (see also: green job, life-cycle assessment, certification and job evaluation) Consumption such as "domestic water consumption" could be [made to be] considered as a collectively ordered activity especially when such data and contextual education is available the respective collective. Demonetized activities [as well as currently financially unrewarded and unprofitable activities] are important for degrowth. Degrowth also emphasizes the need to 'degrow' various sectors of the economy without a negative connotation usually associated with such measures such as at least temporary job-loss. If no immediate retraining occurs, leisure time may increase at least temporarily. There are some suggestions that in general, increases in leisure time do not per se translate to increased sustainability – in particular that some time saved did not decrease total distance of car travel. Degrowth-related economic concepts A study suggests that the concepts of sharing economy and circular economy on their own, while useful as broad components, are insufficient and ineffective. Economic concepts by which scholarly literature approaches problems such as overconsumption, using this terminology to characterize broad, typically conceptual-stage, solution-proposals include: Doughnut economy (see also: planetary boundaries) Community economy and commons (see also: Commons#Economic theories and Gemeinwohl-Ökonomie) Strong and weak sustainable consumption Some writers make a distinction between "strong" and "weak" sustainability. Strong sustainable consumption refers to participating in viable environmental activities, such as consuming renewable and efficient goods and services (such as electric locomotive, cycling, renewable energy). Strong sustainable consumption also refers to an urgency to reduce individual living space and consumption rate. Weak sustainable consumption is the failure to adhere to strong sustainable consumption. In other words, consumption of highly pollutant activities, such as frequent car use and consumption of non-biodegradable goods (such as plastic items, metals, and mixed fabrics). In 1992, the United Nations Conference on Environment and Development (UNCED), also referred to as the Earth Summit, recognized sustainable consumption as a concept. It also recognized the difference between strong and weak sustainable consumption but set efforts away from strong sustainable consumption. The 1992 Earth Summit found that sustainable consumption rather than sustainable development was . Currently, strong sustainable consumption is only present in of discussion and research. International government organizations’ (IGOs) prerogatives have kept away from strong sustainable consumption. To avoid scrutiny, IGOs have deemed their influences as limited, often aligning its interests with consumer wants