For more on which see https://news.ycombinator.com/item?id=11647304 https://news.ycombinator.com/item?id=11647304, https://news.ycombinator.com/item?id=3519952

For more on which see https://news.ycombinator.com/item?id=11647304 https://news.ycombinator.com/item?id=11647304, https://news.ycombinator.com/item?id=3519952 https://news.ycombinator.com/item?id=3519952 and https://news.ycombinator.com/item?id=9554134 https://news.ycombinator.com/item?id=9554134 .