"Responsibilities are guarded jealously. Knowledge is hoarded, because making oneself irreplaceable is the only lever one has to protect oneself from future lay

"Responsibilities are guarded jealously. Knowledge is hoarded, because making oneself irreplaceable is the only lever one has to protect oneself from future layoffs. I see all of this at Google now." My father, a machine mechanic, gave me the same advice years ago. In my mind stuff like this only applied to blue collars so I didn't give it too much thought. Only later did I realize (after the company I was at became so mismanaged) he was 100% right.