It's not as clear as one might think. Here is an extensive discussion:
https://news.ycombinator.com/item?id=13893870 (238 comments)
A few extra comments:
https://news.ycombinator.com/item?id=13886467 (6 comments)
https://news.ycombinator.com/item?id=13879156 (1 comment)
And many submissions with no discussion:
https://news.ycombinator.com/item?id=13897279
https://news.ycombinator.com/item?id=13893537
https://news.ycombinator.com/item?id=13891064
https://news.ycombinator.com/item?id=13889363