It's very interesting with this perspective of internet popularity of the concept. I remember the Wikipedia entry from a long time ago as much shorter than the

It's very interesting with this perspective of internet popularity of the concept. I remember the Wikipedia entry from a long time ago as much shorter than the current version, so went back in time. In 2018, the article was much shorter: https://en.wikipedia.org/w/index.php?title=Peter_principle&oldid=838042843 https://en.wikipedia.org/w/index.php?title=Peter_principle&o... But I really like the visualization in the 2018 version: https://en.wikipedia.org/wiki/File:Peters_principle.svg https://en.wikipedia.org/wiki/File:Peters_principle.svg. And as I can learn from other HN comments below, there was indeed real studies conducted in 2018, so the comical/logical hypothesis has been further developed and empirical evidence is now also there.