I don't mean value in the financial sense, but rather in the sense of helping a person improve as a developer. As for mixing praise and criticism, that is appr

I don't mean value in the financial sense, but rather in the sense of helping a person improve as a developer. As for mixing praise and criticism, that is appropriate for certain situations; for example when dealing with a student with low self confidence. However there is a danger in praise which I outlined in my previous comment, it really doesn't accomplish much besides stroking a person's ego, and that can have unintended negative consequences for their long term development.