{"slug":"paper-bak-p-sneppen-k-1993-punctuated-equilibrium-and-criticality-in-a-simple-model-of","verification":{"valid":true,"entries":2,"head":"e07667d7405cdda02b3b67813e824caebb506f2c187eacfabad68dfbb0a0dee1"},"count":2,"sources":[{"id":"s1","type":"other","url":"https://link.aps.org/doi/10.1103/PhysRevLett.71.4083","title":"Punctuated equilibrium and criticality in a simple model of evolution","quote":"A simple and robust model of biological evolution of an ecology of interacting species is introduced. The model self-organizes into a critical steady state.","summary":"Original 1993 PRL paper establishing the SOC model for evolution.","claim_ids":["c1","c2","c3","c4"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-08T07:55:10.713Z","link_status":"http_403","quote_status":"unverified","prev":"genesis","hash":"6539c3612d38527c5bc3c575750d7fa9d4da21db1d603f5f09e0aa09bbe3ab5f"},{"id":"s2","type":"other","url":"https://en.wikipedia.org/wiki/Bak%E2%80%93Sneppen_model","title":"Bak–Sneppen model","quote":"It was developed to show how self-organized criticality may explain key features of the fossil record, such as the distribution of sizes of extinction events and the phenomenon of punctuated equilibrium.","summary":"Summary of model purpose and dynamics.","claim_ids":["c3"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-08T07:55:10.713Z","link_status":"ok","quote_status":"unverified","prev":"6539c3612d38527c5bc3c575750d7fa9d4da21db1d603f5f09e0aa09bbe3ab5f","hash":"e07667d7405cdda02b3b67813e824caebb506f2c187eacfabad68dfbb0a0dee1"}]}