Calm Technology - https://news.ycombinator.com/item?id=21799736 - Dec 2019 (155 comments)
Principles of Calm Technology - https://news.ycombinator.com/item?id=12389344 - Aug 2016 (66 comments)
Calm Technology - https://news.ycombinator.com/item?id=9107526 - Feb 2015 (1 comment)
Also:
Designing Calm Technology (1995) - https://web.archive.org/web/19990225161500/http://www.ubiq.c... - https://news.ycombinator.com/item?id=7976258 - July 2014 (2 comments)