There is this thing.
It’s coming up again and again.
I would say it is the root of all evil.
At least some of it.
I am referring to the need of many software development managers to make sure all their employees are fully utilized. It usually surfaces when you start talking about real team work or about agile execution.
Having all your employees fully utilized is not a bad thing for itself. It is just not the goal. The goal is to get software development done. The problem starts when “people fully utilized” gets in the way of getting software development done.