which further contributes to running high risks of failure, especially in social terms. The Oversimplification of Urban Complexity: Due to the nature of current trends in measuring sustainability, there has been a strong focus in the quantifiable aspects of sustainability like energy-efficiency or waste-efficiency. This creates a tendency of oversimplification by neglecting the social and political aspects of the city that are unmeasurable qualitative aspects, yet significant to the fundamental concept of eco-cities. The Quest for the Ideal Community: This section of the criticism focuses on the practical limits to merging economic goals with social goals in the urban development process. "Under the banner of green technology, inhabitants are forced to pay higher costs for their use of facilities in eco-cities." Eco-cities as isolated entities Another larger conceptual criticism faced by eco-cities stems from the ambiguity in the definition of sustainability as a term. This has been further elaborated by Mike Hodson and Simon Marvin in their article titled 'Urbanism in the Anthropocene: Ecological Urbanism or Premium Ecological Enclaves' where they noted "We have tended to refer to sustainability in a generic sense, and our discussions of sustainability could be employed to anything that has sustainable as an adjective". As a result of this, a widespread trend has been observed in the growing number of eco-cities developed over the past two decades that claim to combat our current global climate-change challenges. Many of these cities are found to be established in isolation from other existing urban centers due to the nature of their ownership. Owing to this isolation, internalization of resource-flows contribute towards a shallow sense of ecological sustainability in such cities. With regard to methods of emissions counting cities can be challenging as production of goods and services within their territory can be related either to domestic consumption or exports. Conversely the citizens also consume imported goods and services. To avoid double counting in any emissions calculation it should be made clear where the emissions are to be counted: at the site of production or consumption. This may be complicated given long production chains in a globalized economy. Moreover, the embodied energy and consequences of large-scale raw material extraction required for renewable energy systems and electric vehicle batteries is likely to represent its own complications – local emissions at the site of utilization are likely to be very small but life-cycle emissions can still be significant. Urban ecological security