I think both are true: there _is_ such a thing as expertise and it's worth making huge sacrifices to develop it. But you cannot be an expert in every aspect of

I think both are true: there _is_ such a thing as expertise and it's worth making huge sacrifices to develop it. But you cannot be an expert in every aspect of an endeavour that you are involved in. You have to be winging it in some regard. A very common example is being an expert programmer who must turn their hand to project planning or politics or UX design in order to translate their engineering excellence into actual success. You can become an expert in each of those things too, but there's always another field of challenge around the corner. It's worthwhile to become great at each of those things as they arise but you have to escape from the longing to never be bad at anything again. Edit: after more pondering, I don't actually think there are any project planning experts. I've never seen it done successfully, _even_ when you take this article's advice and admit that various aspects of planning (like time estimation) are hopeless. So I guess the hopelessness is fractal in some places.