If we were to examine the completion of a work, would we better understand the whole creative process? The purpose of this dissertation is to identify the complexity of completing a work, understanding its meaning and its method. The research aims to regroup and highlight the accounts of professionals in varied specialities and the knowledge of specialists in the subject. The presentation tries to highlight the tensions perceived in the interviews. "A for Architectonics... C for Closure...", the reader can browse through the dissertation, organised like an alphabet, depending on their curiosity and their associations of ideas.