From a social point of view, certainly not the Zola novel written but unpretentious reflects the mores of the moment: the working conditions in this professional sector, zero recognition by the hierarchy, the lack of interest of work, "over-qualification" of people doing this job for fluff, and finally the stupidity of customers. Finally, at below its lightness and freshness of his writing, this novel to another dimension, that of a mirror of society.
And you clients who have read this book, always want to be as clumsy with cashiers?