Previous discussions:<p><a href="https://news.ycombinator.com/item?id=1580426" rel="nofollow">https://news.ycombinator.com/item?id=1580426</a> (5 comments)<p><a href="https://news.ycombinator.com/item?id=2010370" rel="nofollow">https://news.ycombinator.com/item?id=2010370</a> (22 comments)<p><a href="https://news.ycombinator.com/item?id=3316340" rel="nofollow">https://news.ycombinator.com/item?id=3316340</a> (2 comments)<p><a href="https://news.ycombinator.com/item?id=5791961" rel="nofollow">https://news.ycombinator.com/item?id=5791961</a> (15 comments)