On the Non-city Foundations of Economic Growth and the Unverifiability of the 'Jacobs Hypothesis': A Reply to Peter Taylor's Comment

In this reply to Peter Taylor, three points are made: Peter Taylor is correct in stating that I have not tested the 'Jacobs hypothesis'; the 'Jacobs model' (as I understand it) is, I suggest, unverifiable; and, continuing from my original article, I restate the argument that 'cities', independently, are (probably) not sources of economic growth. I end with a few words on the problem of using the term 'city' as an independent variable to explain economic growth.