The ol’ Peter Principle. I remember that from the early 70’s.
From jewpedia -
The concept was explained in the 1969 book The Peter Principle (William Morrow and Company) by Laurence Peter and Raymond Hull.[2] Hull wrote the text, which was based on Peter's research. Peter and Hull intended the book to be satire,[3] but it became popular as it was seen to make a serious point about the shortcomings of how people are promoted within hierarchical organizations. The Peter principle has since been the subject of much commentary and research.
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