Previous discussions and commentary:
https://news.ycombinator.com/item?id=19184412
https://news.ycombinator.com/item?id=14627711
https://news.ycombinator.com/item?id=8941588
https://news.ycombinator.com/item?id=5809724
https://news.ycombinator.com/item?id=5680336