Peter Principle

What Is the Peter Principle in Simple Terms?

The Peter Principle is the tendency for people to rise through a hierarchy until they reach a position they can't perform well, and then to stay there.

The Peter Principle in Real Life

A company has a great car salesman, so good that it promotes him into management, assuming that someone who excels at selling cars will be equally good at managing people. But the two skills aren't necessarily correlated.

If he turns out to be a poor manager, the company typically won't reverse the promotion, nor will it promote him any further. So he ends up stuck in a role he isn't suited for.

The team suffers a double loss, it has lost its best salesman and gained a poor manager.

Conclusion

Being highly skilled in one area doesn't guarantee those skills carry over to another. People tend to be promoted until they reach a level where they can no longer excel, and there they remain, stuck in a job that doesn't fit them.