Koichi Takahashi https://koichi-takahashi.me/en/ Author website for Koichi Takahashi. Supplementary material for publications. en Appendix 1: Key Propositions and the Hierarchy of Certainty https://koichi-takahashi.me/en/agibook/appendix-1/ https://koichi-takahashi.me/en/agibook/appendix-1/ Sun, 02 Aug 2026 15:00:00 GMT Appendix 1 to AGI: How Superhuman Intelligence Reshapes Civilization. Classifies the book's principal claims across five levels: proof, physical constraint, experiment and observation, argument, and prediction. Appendix 2: Responses to Anticipated Criticisms https://koichi-takahashi.me/en/agibook/appendix-2/ https://koichi-takahashi.me/en/agibook/appendix-2/ Sun, 02 Aug 2026 15:00:00 GMT Appendix 2 to AGI: How Superhuman Intelligence Reshapes Civilization. Organizes strong anticipated objections as criticism, impact on the book, response, and remaining uncertainty. Appendix 3: Deriving the Knowability Map https://koichi-takahashi.me/en/agibook/appendix-3/ https://koichi-takahashi.me/en/agibook/appendix-3/ Sun, 02 Aug 2026 15:00:00 GMT Appendix 3 to AGI: How Superhuman Intelligence Reshapes Civilization. Documents the assumptions, calculations, interpretation, and limits of the Knowability Map introduced in Chapter 8. Supplementary Essay 1: Deriving Constitutive Pluralism https://koichi-takahashi.me/en/agibook/ronko-pluralism/ https://koichi-takahashi.me/en/agibook/ronko-pluralism/ Sun, 02 Aug 2026 15:00:00 GMT A supplementary essay to AGI: How Superhuman Intelligence Reshapes Civilization. Sets out the reasons for adopting Proposition Six, constitutive pluralism, and the premises and inferences that support its composition: two foundational conditions, three pillars, and autonomy of pace. Supplementary Essay 2: Deriving AISOP https://koichi-takahashi.me/en/agibook/ronko-aisop/ https://koichi-takahashi.me/en/agibook/ronko-aisop/ Sun, 02 Aug 2026 15:00:00 GMT A supplementary essay to AGI: How Superhuman Intelligence Reshapes Civilization. Shows how the five AISOP norms for knowledge production follow from Proposition Six, constitutive pluralism. A Response to “AGI Ruin”: Granting the Danger, Not the Certainty of Doom https://koichi-takahashi.me/en/agibook/agi-ruin/ https://koichi-takahashi.me/en/agibook/agi-ruin/ Sun, 02 Aug 2026 15:00:00 GMT A point-by-point response to the central logic of Eliezer Yudkowsky's AGI Ruin: A List of Lethalities, examining the single-critical-try assumption on which certainty of doom depends.