<p>"...Patents are the conventional measure of innovation. Despite their
various weaknesses, patents represent a systematic, quantitative measure
of innovation and are used by economists as the single dominant measure
of innovation. But, as with other measures, economists tend to measure
them on a per capita basis.</p>
<p><b>Innovation Density: </b>Our measure of innovation density is
patents per square kilometer. The map below shows the density of
innovation based on this measure. The median density of innovation is
.008 patents per square kilometer. The densest metros have more than .4
patents per square kilometer, while the least dense have fewer than
.001...."</p>
<a href="http://www.theatlantic.com/business/archive/2010/09/the-density-of-innovation/62576/">http://www.theatlantic.com/business/archive/2010/09/the-density-of-innovation/62576/</a><br clear="all">-----------------------<br>
<br>Wonder whether the results would have been any different if the investigator had looked at Patents and European-closet density !!<br>-- <br>CK Raju<br><br><br><br><br><br><br>