We join Gabriel Tupinambá from the Subset of Theoretical Practice for a discussion on the Japanese Marxist Kojin Karatani. We discuss what Karatani's project is, why we should care about it, before focusing on his magna opus The Structure of World History. We discuss his approach to modes of exchange, and why it is a novel lens, how communism fits on his scheme before mentioning some weak points. We end up with a discussion of how Gabriel´s reading of Karatani has affected his organizing.