In a sense, originals and "copies", whether mock or not, are equivalent. Any object, if it is copied, becomes an original - source, model or pattern for the multiplicity of copies likely to derive from it. In English, such a generator original, also called a master , is referred to as the copy (or master-copy or simply master ) of all other copies, as in the following definition of the name copy : "work of art, writing, etc… original from which a copy is made 1. ”(The French change gender and speak of“ mother copy ”, or simply“ mother ”). If a "copy" is required to produce copies, then, by metonymy, it is either that the name of the source has been given to its derivatives, or, more likely, that the source has been found so closely related. to its derivatives that it (the original) took the name of the latter (copy). This copious copy generator 2 is recognized as such, but only subsequently. Here, the effect transfers to its cause, and blurs the priority relationship.