1) You cannot mentor and teach good judgment.
2) Management has virtually nothing to do with mentorship and teaching. It is more akin to having a garden. You have a particular type of soil and sunshine and rainfall (tasks, company culture, pre-existing teammates, etc) and you pick the right seeds that will flourish in this environment.
3) Books will teach you nothing useful, because they are almost always a) written by psychologists who couldn't manage a group of chickens let alone humans b) written by competent managers for the purpose of having a feel-good career capstone, not transmit actual advice. What they would tell you behind closed doors is virtually diametrically opposed to the platitudes in management books.
Obviously you can. People are not born with good judgment. Every single person with good judgment was mentored and taught it by different people throughout their lives.
Perhaps you mean that you can't mentor or teach adults good judgment? This is slightly more plausible but also wrong. People are capable of learning new tricks their entire life.
But especially if we're talking about the people I think we're talking about - entry level ish employees, probably in their 20s - no, this is silly, these are exactly the people you can mentor and teach good judgement. They are hungry for someone capable of doing so!
> Management has virtually nothing to do with mentorship and teaching.
I'm telling you, you need to read a book on management. You don't seem to know anything about it, but are nonetheless opining on it very confidently.
> Books will teach you nothing useful
Hahahaha no wonder you're so ill informed. You're wrong, books are great. If you go through life trying to reinvent the world from within the bubble of your own mind alone, you are doomed to fail.
You don't need to answer that. It is a rhetorical question. But consider what you wrote relative to good parenting, regardless of ages.
Nobody stops learning. On any measure, hopefully as long as we live, we are all still children relative to where we will be in a decade or two.
Mentoring, books, feedback, encouragement are valuable to give and receive throughout our lives because there is always another level of skill and wisdom to be achieved.