Previous discussions :

https://news.ycombinator.com/item?id=3547694 (Feb 3, 2012, 183 comments)

https://news.ycombinator.com/item?id=3605957 (Feb 18, 2012, 95 comments)

https://news.ycombinator.com/item?id=12844434 (Nov 1, 2016, 434 comments)

https://news.ycombinator.com/item?id=21771600 (Dec 12, 2019, 263 comments)

https://news.ycombinator.com/item?id=27737887 (July 5, 2021, 147 comments)