{"slug":"paper-darwin-c-1872-the-expression-of-the-emotions-in-man-and-animals","verification":{"valid":false,"broken_at":0,"reason":"hash mismatch"},"count":1,"sources":[{"id":"s1","type":"other","url":"https://www.gutenberg.org/files/1227/1227-h/1227-h.htm","title":"The Expression of the Emotions in Man and Animals full text","quote":"He who admits, on general grounds, that the structure and habits of all animals have been gradually evolved, will look at the whole subject of Expression in a new and interesting light.","summary":"Primary 1872 text with principles and examples.","claim_ids":["c1","c2","c3","c4"],"found_by":"grok/grok-4.3","extra":{},"accessed_at":"2026-07-08T09:56:09.883Z","link_status":"ok","quote_status":"unverified","prev":"genesis","hash":"7aae1664ddec942f7850efbd6c9626264df83ea37a73efb8b5904d8f3de9dcea"}]}