To give some more context, this is the work of Adam Yedidia, Scott Aaronson&#x27;s PhD student at MIT.  Here&#x27;s a related blog post on Shtetl-Optimized:<p><a href="http:&#x2F;&#x2F;www.scottaaronson.com&#x2F;blog&#x2F;?p=2725" rel="nofollow">http:&#x2F;&#x2F;www.scottaaronson.com&#x2F;blog&#x2F;?p=2725</a>