Re: ( )
I think the fault here is to take something that can quite easily be considered a stylistic choice, i.e. authorial intrusion, and make it into a matter of formal aesthetic. Since the whole matter rests on whether authorial intrusion is bad or good, it is already doomed to failure, as it cannot be proven or disproven.
However, it can be argued whether it is a difficult technique to pull off, and under what conditions it may succeed.
The biggest thing to be aware of is that by allowing authorial voice to enter into the narrative at any point, you as the author have formally announced to the reader that the story is being told to them, and not experienced first hand as though the reader were witnessing it themselves.
One of the advantages of authorial intrusion is that the author is then permitted to withhold key information from the reader in ways that reveal character (such as when a story is told by an untrustworthy narrator), and can also stylize many aspects of the narrative (such as character, setting, plot etc...) since everything then falls under the purview of recollection. Time jumps are also permitted as part of the rules of the game.
For examples of this occurring within the first pages of the novel, look at Jonathon Franzen's "The Corrections", first parenthetical aside is on the 3rd page of text... or at Thomas Pynchon's "Gravity's Rainbow", also on page 3 of the text (this one, btw, has every device imaginable from asides to disjunctive leaps to dashes etc... all within the opening pages and these are the least of the literary diversions that Pynchon utilizes within the 700 pages of the novel).
- Anatole
"arainsb, both examples you gave are correct, but parentheses aren't likely to work well in a novel. In expository prose, they're most commonly used to enclose explanations, background info, caveats, that sort of thing–in other words, departures from the main narrative. In a novel, if a sentence or part of one departs from the main narrative, who can be saying it? Only the author. Having the author turn toward the camera and address the reader went out of style when authors stopped writing "And now, dear reader, I must beg your indulgence as we avert our eyes from our virtuous heroine, for she will shortly occupy herself in removing her garments and stepping into the bath."*
If it isn't the author speaking, it's the narrator, and we're in infodump land."