Because theory is not enough
“Leonardo Da Vinci was an expert learner, primarily because he was insatiably curious. Born in 1452, Da Vinci produced between 20,000 to 28,000 pages of notes and sketches about work-related subjects and everything else that interested him. He was curious about dozens of topics, including but not limited to anatomy, engineering, philosophy, painting, botany, physiology, landscapes, proportion, perspective, architecture, warfare, geography, zoology, light and shade, theories, and inventions. He started writing his journals when he was 26, and he continued writing for the rest of his life.”
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