Also there&#x27;s a significant problem of infrastructural efficiency. There&#x27;s research indicating that city infrastructure follows a 3&#x2F;4ths-power distribution, where doubling the population only increases the need for infrastructure by 68% [1]. The more generalizable format of this is Kleiber&#x27;s Law [2], which notes that animal metabolisms scale along that same distribution by body mass. The implication is that cities like Detroit that are rapidly contracting in population <i>and</i> per-capita income are getting a double-wammy of decreasing tax revenues and increasing per-capita infrastructure costs.<p>[1] <a href="http:&#x2F;&#x2F;opinionator.blogs.nytimes.com&#x2F;2009&#x2F;05&#x2F;19&#x2F;math-and-the-city&#x2F;?_r=0" rel="nofollow">http:&#x2F;&#x2F;opinionator.blogs.nytimes.com&#x2F;2009&#x2F;05&#x2F;19&#x2F;math-and-the...</a><p>[2] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Kleiber%27s_law" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Kleiber%27s_law</a>