Previous discussions https://news.ycombinator.com/item?id=7530427 https://news.ycombinator.com/item?id=7530427 and https://news.ycombinator.com/item?id=104747

Previous discussions https://news.ycombinator.com/item?id=7530427 https://news.ycombinator.com/item?id=7530427 and https://news.ycombinator.com/item?id=10474717 https://news.ycombinator.com/item?id=10474717