<P> If the degradation of natural and social capital has such important consequence the question arises why action is not taken more systematically to alleviate it . Cohen and Winn point to four types of market failure as possible explanations: First, while the benefits of natural or social capital depletion can usually be privatised, the costs are often externalised (i.e. they are borne not by the party responsible but by society in general). Second, natural capital is often undervalued by society since we are not fully aware of the real cost of the depletion of natural capital . Information asymmetry is a third reason--often the link between cause and effect is obscured, making it difficult for actors to make informed choices . Cohen and Winn close with the realization that contrary to economic theory many firms are not perfect optimisers . They postulate that firms often do not optimise resource allocation because they are caught in a "business as usual" mentality . </P> <P> Main page: Education for sustainable development </P> <P> Education must be revisited in light of a renewed vision of sustainable human and social development that is both equitable and viable . This vision of sustainability must take into consideration the social, environmental and economic dimensions of human development and the various ways in which these relate to education:' An empowering education is one that builds the human resources we need to be productive, to continue to learn, to solve problems, to be creative, and to live together and with nature in peace and harmony . When nations ensure that such an education is accessible to all throughout their lives, a quiet revolution is set in motion: education becomes the engine of sustainable development and the key to a better world .' </P> <P> Higher education in sustainability across education streams including engineering, finance, supply chain and operations is gaining weight - age . Multiple institutes including Wharton, Columbia, CASI Global New York offer certifications in Sustainability . Corporate's prefer employees certified in sustainability . Reference https://www.wharton.upenn.edu/ http://www.columbia.edu/ http://casiglobal.us/ </P>

Which of the following choices is the main goal of sustainable practices