Purpose: A complex adaptive system of individual sovereignty Problem: Decentralized Arbitration (Adaptive) Craftsmanship: Ultra poor Inductive Iteration of Distributed Oracle Turing Machine Theoretical reference: Turing's 1938 doctoral thesis "Logic Systems Based on Ordinals" Formula: (∀ x) (∃ y) R (x, y); Among them, R is recursive Implementation example: Bitcoin (an electronic currency application based on this technology) Example problem: Double Flower Problem (decentralized arbitration) Design Philosophy: Evolutionary Theory (the holistic thinking that emerges from the bottom up) Promotion: Various application systems based on this craft