Love's debris & the irreversible of written speech
In his article on Black Box (in a superb English translation by Nicholas de Lange), published in New Statesman on the 1st of July 1988, Sean French expresses his surprise for the epistulary form of this novel; he also locates the inevitable problem of doubtful verisimilarity presented to a novelist by the application of this writing technique. In any case, the epistulary novel, especially when consisting of a letter exchange among individuals of different characters, mentality and origins, could always constitute a temptation to the writing skill of an author, as the heterogeneousness it entails makes it a first class exercise of style.
