I think that there are many experts out there however, most experts are to humble to state that they are an expert.
There are many knowledged individuals in this hobby that may be an expert in one area.
I have to agree with your explanation of an expert. I also feel that an expert comes with many, many years in this hobby. I would classify people such as Roy Stockwell and Grant Ankenman as experts (even though they would not). These individuals have always provided me (and I'm sure most of us) with proper information that has helped us better maintain our animals. When they do not know the answer, they are quick to state so and not just make something up.
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