When I was growing up, it was considered rude to offer unsolicited advice. I never, ever, gave advice to others unless I was specifically asked. People had to actually say, “Could you give me some advice on this?”  I felt, “Who am I to advise this person? What do I really know anyway?”
I felt that way in high school, in college, in grad school, as a post-doc, as an assistant professor, as an associate professor.

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