The system (TM) exists because it is trying to efficiently optimize decisions and pathing over a large population, but that is not the end goal of the system.
("I can get another one of you in a minute so don't you ever ever ever get to thinking you're irreplaceable.")
Efficiently executing assigned tasks is not a success-maximizing strategy over a career.
"Oh sure X but that's a different project."
"Yeah project selection is important."
"Nobody is senior enough to pick their projects. People pick projects; the ones who succeed at them are described as senior, sometimes post-facto."