In his 1903 classification of the sciences (CP 1.180-202) Peirce classified formal logic under mathematics, but he also classified logic as a normative science.
Question: Where is semeiotic? As a formal theory, it would be classified with formal logic under mathematics. But semeiotic is also an applied science when it is used in perception, action, communication... When I drew a diagram to illustrate Peirce's classification, I did not include semeiotic because he had not mentioned it. But since it is a science, it belongs somewhere in that diagram. Where? I believe that it belongs directly under phenomenology, since every perception involves signs. See the attached CSPsemiotic.jpg. Does anyone have any comments? John
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