Novelists should thank Flaubert the way poets thank spring: it all begins again with him. There really is a time before Flaubert and a time after him. Flaubert decisively established what most readers and writers think of as modern realist narration, and his ifnluence is almost too familiar to be visible. We hardly remark of good prose that it favors the telling and brilliant detail; that it privileges a high degree of visual noticing; that it maintains an unsentimental composure and knows how to withdraw, like a good valet, from superfluous commentary; that it judges good and bad neutrally; that it seeks out the truth, even at the cost of repelling us; and that the author's fingerprints on all this are, paradoxically, traceable but not visible. You can find some of this in defoe or Austen or Balzac, but not all of it until Flaubert....
...Flaubert perfected a technique that is essential to realist narration: the confusing of habitual detail with dynamic detail. Obviously, in that Paris street, the women cannot be yawning for the same length of time as the washing is quivering or the newspapers lying on the tables. Flaubert's details belong to different time signatures, some instantaneous and some recurrent, yet they are smoothed together as if they are all happening simultaneously.

--How Fiction works, James Wood, (2008)