Informal Logic Traces Roots And Educational Rise

The article traces the history of informal logic, noting the term's popularization in the 1970s by Johnson and Blair and earlier roots in Aristotle, Port Royal, and 19th-century texts. It describes the field's institutionalization through textbooks, journals, the Critical Thinking movement, and a 1980 California State University executive order, highlighting its widespread adoption in higher education and role in teaching reasoning skills.