A thread from 2015: <a href="https://news.ycombinator.com/item?id=9651828" rel="nofollow">https://news.ycombinator.com/item?id=9651828</a>
New version (2018): <a href="https://arxiv.org/pdf/1302.6946v1.pdf" rel="nofollow">https://arxiv.org/pdf/1302.6946v1.pdf</a><p>The linked version is from 2013.