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'Borrowed size' is an emerging policy concept in several European countries, presenting theoretical potential to explain contemporary urban dynamics unaddressed through conventional urban growth theories that emphasise the role of agglomeration economies. In its original conceptualisation by Alonso, the concept describes and explains the situation that especially smaller cities that are located in a larger 'megapolitan complex' do perform better because they have access to agglomeration benefits of larger neighbouring cities. This paper scrutinises the concept of borrowed size, thereby focusing on its conceptualisation and reviewing its empirical justification thus far. Our empirical analyses show that the concept must be stretched in terms of scale and scope to enhance its policy value. Borrowed size occurs when a city possesses urban functions and/or performance levels normally associated with larger cities. This is enabled through interactions in networks of cities across multiple spatial scales. These networks serve as a substitute for the benefits of agglomeration. Theoretically, the borrowed size concept demands a recasting of the geographical foundations of agglomeration theory. [ABSTRACT FROM AUTHOR]

This paper considers the work of the European Cluster Observatory (ECO) in light of current debates around the notion of clusters. Examining the definitions employed by the ECO, questions are posed about how effective policy can be when using highly restrictive means of analysis. Further, the work contends that, far from this being purely an analytical problem, there also exists a fundamental semantic issue regarding the term ‘economic cluster’. [ABSTRACT FROM PUBLISHER]