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from Andy Blunden
Lecture 3 of a series of 10 lectures: Concepts of CHAT, given by Andy Blunden. This lecture deals with the key methodological concepts used by Vygotsky, following Marx, and which can be fruitfully applied to research in any of the sciences. See ethicalpolitics.org/ablunden/pdfs/The%20Germ%20Cell%20and%20the%20Unit%20of%20Analysis.pdf