I can't really talk about most of them, but I described one example down here: https://news.ycombinator.com/item?id=15589020 https://news.ycombinator.com/item?i

I can't really talk about most of them, but I described one example down here: https://news.ycombinator.com/item?id=15589020 https://news.ycombinator.com/item?id=15589020