Past discussions here:

2010 - https://news.ycombinator.com/item?id=1378232

2011 - https://news.ycombinator.com/item?id=2478532

2013 - https://news.ycombinator.com/item?id=5504799

2014 - https://news.ycombinator.com/item?id=7690617

2018 - https://news.ycombinator.com/item?id=16849603