Earlier quoted context omitted.
> The reality is that in order to effectively manage, you have to understand what the doers are actually doing. Actually it is not. One of the best bosses I ever had had no clue what I was doing. He was smart enough to admit that he didn't know how to do my job. He was excellent at his job though: figuring out who were good people and removing roadblocks from their way. He identified a few good programmers to do the…
Actually it is not. Well, the HBR studies cited, here, indicate a correlation between a manager who could do their direct report's job and job satisfaction of that direct report. It does not claim that this is necessary for direct report job satisfaction, only that it makes it more likely. So, my comment could have been better phrased as: The reality is that in order to effectively manage, it helps if they understand…
What you need is someone who will take care of the employees and jump on grenades of distraction so they can focus on their job. But you also have to have enough context to step back and say, "hmm... doing this would be best for the greater good - my team should take a look at this." It doesn't need to be the ability to do it themselves, but they have to have some.