facts

Something that has really occurred or is actually the case; something certainly known to be of this character; hence, a particular truth known by actual observation or authentic testimony, as opposed to what is merely inferred, or to a conjecture or fiction; a datum of experience, as distinguished from the conclusions that may be based upon it.

Books in french

 Genèse et développement d’un fait scientifique
de Bruno Latour (Postface), Ludwik Fleck, Ilana Löwy (Préface), Nathalie Jas (Traduction). Éditeur : Belles Lettres (6 octobre 2005). Collection : Médecine & Sciences humaines. Format : Broché - 280 pages. ISBN : 225143013X