Previous discussions:<p><a href="https://news.ycombinator.com/item?id=8722175" rel="nofollow">https://news.ycombinator.com/item?id=8722175</a><p><a href="https://news.ycombinator.com/item?id=8751747" rel="nofollow">https://news.ycombinator.com/item?id=8751747</a><p><a href="https://news.ycombinator.com/item?id=8784342" rel="nofollow">https://news.ycombinator.com/item?id=8784342</a><p><a href="https://news.ycombinator.com/item?id=8815100" rel="nofollow">https://news.ycombinator.com/item?id=8815100</a>