You might want to look at the author's comment here (https://news.ycombinator.com/item?id=45290591 https://news.ycombinator.com/item?id=45290591) posted at abou

You might want to look at the author's comment here (https://news.ycombinator.com/item?id=45290591 https://news.ycombinator.com/item?id=45290591) posted at about the same time as the link itself, which largely answers these questions.