Of course !
I think this cover many subjects and areas, not all obviously, for example:
Repairman -> Need to see the correct problem to apply the correct solution, if in the past he had the same trouble he could try to do the same, but sometimes the problem are not exactly equal, so.....
Lawyer -> He needs make the correct defense to him client, based explictly in client's case and another relevant information, so...
Doctor -> After read a lots of books (in university), he still need the correct evaluation from their pacient, so...
But all of this examples have another important thing in common: Everything has a cost.
I don't know if I strayed from the subject but this is my analogy.
Hey, it's a valid point. I've met doctors and lawyers who applied principles without doing any of their own observation or evaluation, and the results were always disastrous.
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