Leonardo da Vinci (probably self-portrait). source: Hebrew Wikipedia It is time to classify Consultants after so many posts about Clients Typology (e.g. Clients Typology: The Stealth , The Captive , The Paralyzed Analyzer ). I do not know if the terms I am using: Niche Consultant and All Around Consultant are the best terms to use. If you think that other terms are more accurate, please comment. Anyway, I am trying to distinguish between two types of Professionals, Consultants, Scientists or Experts . Most of them could be labeled as Niche experts: They know almost everything about a relatively narrow subject matter. Leonardo da Vinchi (1452-1519), whose portrait appears right after the heading of this post, could not be depicted as a Niche expert. he is a classic example of The All Around type. I will quote the English Wikipedia: " ... Da Vinchi was an Italian Renaissance polymath: painter, sculptor, architect, musician, mathematician, engineer, invento...
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