That question has come up a few times, lots of good discussion in this post: https://news.ycombinator.com/item?id=20058697 https://news.ycombinator.com/item?id

That question has come up a few times, lots of good discussion in this post: https://news.ycombinator.com/item?id=20058697 https://news.ycombinator.com/item?id=20058697 And the back and forth on whether you really need it: https://news.ycombinator.com/item?id=20158386 https://news.ycombinator.com/item?id=20158386