A short post about cities and statistics:
Cities are remarkably hard to define. You would think otherwise, given the amount of data we have at our disposal. There are few cities on earth that have not been comprehensively mapped and photographed. But certain problems of definition remain: even in a single context, let’s say the United Kingdom, the definition of a city’s limits might vary from one case to another; we often compare apples with oranges. I was reminded this in recent coverage of a survey which measured the relative ‘vibrancy’ of different UK cities. I didn’t think much of the survey (it was a ‘fucking bag of bollocks’ according to the architectural journalist Ian Martin). One reason I didn’t was that its definitions varied according to city. So ‘London’ was, strictly speaking, the Greater London metropolitan region, with a population of 7.5 million or so. Its ‘Manchester’ was the
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