“A promenade in a pseudothingything rigor, with Auguste, Marcel, Walt, Pierre and I. An applied heraldry exercise, a search for meaning between traps and keys: the urinal in three black discs. I should have asked before”. Promenade Mythanalytique is an essay on posterity and posterization. It is formulated by the “chimist” with/for/on Pierre Mercier to trace a dialogue/debate opposing him to Paul Jacques Yves Guilbert, around two radical speculations: the artist without works, and the artist without audience. The Mythanalytic Journey is “handing in”, 10 years later, the first exercise assigned by Pierre Mercier at the beginning of PJYG’s artistic training: the “Monument Portable”.