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Editor’s comment:  Isaacson rides again, making a well-chronicled figure interesting in a different way, as he did with Einstein and Jobs.  His research is outstanding and it helps a non-artist like me that he accompanies most references with pencils, diagrams, notes, paintings and sculptures of the great master. 

In every marketing presentation for thirty years, my opening theme is the same: tell me how you build, update and use your customer lists and I’ll tell you how efficient and effective your marketing can be.