[grumple]

The Peter Principle is just an idea someone had (and intended to be satire) and not an actual factual reflection of the way the world works.

[fluoridation]

The fact that it's satire doesn't make it untrue.

[drewcoo]

Not just that. The fact that it's satire means it's at least somewhat true.

[afarrell]

However if the satyrical speaker did not believe that they had a duty of care to the truth, then it is bullshit[1].

[1] Prof. Harry Frankfurt, On Bullshit. http://www2.csudh.edu/ccauthen/576f12/frankfurt__harry_-_on_...

[fluoridation]

Not really, that does not follow. It is possible to speak the truth by accident.

[afarrell]

It is also possible to arrive safely at your destination via reckless driving.

[fluoridation]

It is equally incorrect to assume that someone who speaks "without a duty of care to the truth" is saying something true or false, if given no other information.

[afarrell]

Indeed. It is just something someone said once, not necessarily wise to reach other conclusions from.

[ZephyrBlu]

It does seem to be a reflection of how the world works though. Most promotions risk being promoted to your level of incompetence because they are happenstance. They mostly occur either when you're joining a new company or someone leaves/company is growing which makes room.

Being promoted because you are excelling in your position and taking on responsibilities of the one above is the rarest main reason from what I have seen.