Wallace is a master at balancing where to place notes, always minding the prosody of his prose.
In a pithy formulation, Steven Connor has quipped that "[b]eing modernist always meant not quite realizing that you were so," whereas "[b]eing postmodernist always involved the awareness that you were so" [...] I would suggest, being a "post-postmodernist" of Wallace's generation means never quite …
the possibility of sincerity depends upon its becoming dialogic in chracter, always requiring a response from the other to bring it into play
Wallace demonstrates with comic brio in the short stories in Brief Interviews