{"slug":"paper-lotka-a-j-1922-natural-selection-as-a-physical-principle","verification":{"valid":true,"entries":2,"head":"84fc7963997ad461108607850194e7031667f2f451484e6e36202b7241f54e6f"},"count":2,"sources":[{"id":"s1","type":"other","url":"https://www.pnas.org/doi/pdf/10.1073/pnas.8.6.151","title":"Natural Selection as a Physical Principle","quote":"The principle of natural selection reveals itself as capable of yielding information which the first and second laws of thermodynamics are not competent to furnish.","summary":"Primary 1922 text establishing selection as third law.","claim_ids":["c1","c2","c3","c4","c5"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-08T12:58:58.454Z","link_status":"http_403","quote_status":"unverified","prev":"genesis","hash":"e86e7d816e8510b3c370611dd513f4abeb31b0e0b1ee24d9f8566e3c6668f9ee"},{"id":"s2","type":"other","url":"https://www.pnas.org/doi/pdf/10.1073/pnas.8.6.147","title":"Contribution to the Energetics of Evolution","quote":"natural selection tends to make this energy flux a maximum, so far as compatible with the constraints","summary":"Companion paper on maximum power.","claim_ids":["c3","c4"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-08T12:58:58.454Z","link_status":"http_403","quote_status":"unverified","prev":"e86e7d816e8510b3c370611dd513f4abeb31b0e0b1ee24d9f8566e3c6668f9ee","hash":"84fc7963997ad461108607850194e7031667f2f451484e6e36202b7241f54e6f"}]}