This article is a detailed commentary on Oswald Spengler's little work "The Man and the Technique". In it we develop the concept of technicality, necessary to understand the broad perspective (zoological, naturalistic, dialectic, operatiological) outlined by the German philosopher. This is not an essay on the Technique in the objective and artifactual sense, but rather on the development of the operative capacities (visual and manual) of the ancestors of man, which led him from predation to Culture, and from Culture to decline: especially the decadence of the western peoples that have contributed most to the takeoff of this technicality.