This is a very good question. I wrote an answer in another thread on this topic which illustrates a use-case you might find interesting: https://news.ycombinato

This is a very good question. I wrote an answer in another thread on this topic which illustrates a use-case you might find interesting: https://news.ycombinator.com/item?id=15512116 https://news.ycombinator.com/item?id=15512116