(2012)<p>Previous discussions:<p><a href="https://news.ycombinator.com/item?id=36746014">https://news.ycombinator.com/item?id=36746014</a><p><a href="https://news.ycombinator.com/item?id=13119138">https://news.ycombinator.com/item?id=13119138</a><p><a href="https://news.ycombinator.com/item?id=3989136">https://news.ycombinator.com/item?id=3989136</a>