wwwade, Web 2.0, Software Wade Roush wrote: Historians believe that Leonardo da Vinci—one of my biggest heroes, if you hadn’t already guessed by reading my columns—filled about 30,000 notebook pages with his drawings, diagrams, discourses, and doodles. Only about 6,000 of those pages survive today, but what wondrous pages they are. Martin Kemp, a leading Leonardo biographer and visual historian at Oxford University, calls the notebooks Leonardo’s “laboratory for thinking.” No one, either befor
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