&gt; It does not take a genius to figure out that this is not a sustainable system.<p>Or it&#x27;s a more sustainable system. The American lifestyle in the past was mostly propped up by slave labor, both domestically and abroad. The reason the standard of living for the middle class is lower now is in part because of increasing equality. (Ignoring the massive wealth gap domestically, which almost certainly will be unsustainable in the long run.)