> That's Peter's principle, and your managers have heard about it too. All this sort of thing was true when I went to management college, last century, and it

> That's Peter's principle, and your managers have heard about it too. All this sort of thing was true when I went to management college, last century, and it was well known to my line management, and yet, nevertheless, all the observations were still true because in effect it's an observation about human nature. It would be guidance if people were guided by it, but they aren't. "I know that's a bad idea, but I'll do it anyway" counts for "We should fire all the people whose performance review didn't rate them above average" just like "I only had a couple glasses of wine, I'm fine to drive".