In my opinion a mentor should be able to give good advices to the mentee as a master of the subject and justify his points. For instance, in the choice of the stacks for a particular project. I mean that the mentor should master what he is advising or at least been able to reference someone else if he don't master the subject.
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In my opinion a mentor should be able to give good advices to the mentee as a master of the subject and justify his points. For instance, in the choice of the stacks for a particular project. I mean that the mentor should master what he is advising or at least been able to reference someone else if he don't master the subject.