Some previous discussion on Hacker News:<p><a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=6513765" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=6513765</a><p>300 points | 824 days ago | 120 comments<p><a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=9015092" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=9015092</a><p>161 points | 336 days ago | 50 comments