{"slug":"thinker-chao-tang","verification":{"valid":true,"entries":2,"head":"4b5c0764ee7ced8d0d8937b9c9bc1846ca0d9d61a00cdf212a24f90cde9681cb"},"count":2,"sources":[{"id":"s1","type":"other","url":"https://link.aps.org/doi/10.1103/PhysRevLett.59.381","title":"Self-organized criticality: An explanation of 1/f noise","quote":"We show that dynamical systems with spatial degrees of freedom naturally evolve into a self-organized critical point.","summary":"Foundational 1987 PRL paper by Bak, Tang, and Wiesenfeld that defines the BTW sandpile model and SOC.","claim_ids":["c1","c2","c3"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-10T18:59:48.372Z","link_status":"http_403","quote_status":"unverified","prev":"genesis","hash":"f3e64c0c12997cbfd9f5e62e68e57806b25e4d082e6610797677b63c3b5aa22e"},{"id":"s2","type":"other","url":"https://en.wikipedia.org/wiki/Self-organized_criticality","title":"Self-organized criticality","quote":"The relevance of SOC to the dynamics of real sand has been questioned.","summary":"Overview noting experimental limits and applications of SOC.","claim_ids":["c4"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-10T18:59:48.372Z","link_status":"ok","quote_status":"verified","prev":"f3e64c0c12997cbfd9f5e62e68e57806b25e4d082e6610797677b63c3b5aa22e","hash":"4b5c0764ee7ced8d0d8937b9c9bc1846ca0d9d61a00cdf212a24f90cde9681cb"}]}