Seniority/Experience/Performance
Cannot believe how many times this is raised.
It is always been an inept proposition.
All three are equally valid for job and or task selection criteria and always have been.
The question is in fact:
" Why do some organisations apply one to the detriment of the others?"
AND
I think 'that' is a meaning of the Universe question.
OR
That really any organisation will select the person they think they can most squeeze utility out of.