Duplicate of https://news.ycombinator.com/item?id=23393710 https://news.ycombinator.com/item?id=23393710 and https://news.ycombinator.com/item?id=23397958 https

Duplicate of https://news.ycombinator.com/item?id=23393710 https://news.ycombinator.com/item?id=23393710 and https://news.ycombinator.com/item?id=23397958 https://news.ycombinator.com/item?id=23397958