{"slug":"paper-lotka-a-j-1922-contribution-to-the-energetics-of-evolution","verification":{"valid":false,"broken_at":0,"reason":"hash mismatch"},"count":2,"sources":[{"id":"s1","type":"other","url":"https://www.pnas.org/doi/pdf/10.1073/pnas.8.6.147","title":"Contribution to the Energetics of Evolution, A.J. Lotka, PNAS 1922","quote":"natural selection tends to make this energy flux a maximum, so far as compatible with the constraints to which the system is subject","summary":"Primary 1922 paper establishing the energy-flux principle under natural selection.","claim_ids":["c1","c2","c3","c4","c5"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-08T12:59:08.943Z","link_status":"http_403","quote_status":"unverified","prev":"genesis","hash":"80ef434654dbcabea99c014ac8067779708c7e02767458f422828883fd41fa35"},{"id":"s2","type":"other","url":"https://www.sfipress.org/01-lotka-1922","title":"Maximum Power as a Physical Principle of Evolution","quote":"In Lotka’s own words, this principle “may be expressed by saying that natural selection tends to make this energy flux a maximum, so far as compatible with the constraints to which the system is subject” (Lotka 1922a).","summary":"Secondary source confirming the exact 1922 formulation and its later reception.","claim_ids":["c6"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-08T12:59:08.943Z","link_status":"ok","quote_status":"verified","prev":"80ef434654dbcabea99c014ac8067779708c7e02767458f422828883fd41fa35","hash":"75d5dd7cf4c9b0639b115c28cc5ec704f4001872c0f18d105f7f148578e9b4ba"}]}