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The Tur is organized in 4 categories. The Mishneh Torah of the Rambam in 14 categories. The Shulchan Arukh adopts the 4 part organization classificaiton. Rambam was a genius in classificaiton partly because the Rambam was trained to understand Aristotle's works in Classificaiton theory/logic such as the Categorica, Posterior Analetics, and Topica.
