The Birth of Intertextuality

Why was the term ‘intertextuality’ coined? Why did its first theorists feel the need to replace or complement those terms – of quotation, allusion, echo, reference, influence, imitation, parody, pastiche, among others – which had previously seemed adequate and sufficient to the description of literary relations? Why, especially in view of the fact that it is still met with resistance, did the new concept achieve such popularity so fast? Why has it retained its currency in spite of its inherent p