Very true!
To go back to something
@Cthulhu.Science said: a while ago I read a Warhammer 40,000 novel about the crew of a tank. I know from the game that this was a Chimera APC, which is a pretty low-ranking troop carrier. If I cared more, I could probably find out who makes Chimeras, how long they've been doing it, what the famous Chimera-using regiments are etc from another 40k novel or one of the rulebooks. In story terms none of this mattered: it was a space tank that worked a lot like a WW2 tank, and every so often a guy who was basically a space Catholic priest would bless it. That's enough of a "hook" for a reader to need to enjoy the story because the tank crew were entertaining.
I'm reminded of all those military SF novels where Space Soldier Regiment X has enormous amounts of backstory, which was probably fascinating for the author, when really it's just the USMC in space. Even a weird setting like Dune gives you hints as to what the soldiers are like: basically Space Arabs v Space Nazis. Often all the reader needs to be told is "These guys are elite and good, those guys are elite and evil, and the setup is a bit like D-Day" or whatever. It's enough to go on.
Also, a lot can be inferred from context. I don't know what a house in Iain M Banks' Culture novels looks like, but I have a feeling that it is high-tech and clean, because the setting feels advanced and the characters seem to understand the tech they're using. A house in Arakeen, on the other hand, is probably basic and grubby, and whatever technology it has will be for special purposes (keeping water probably) which the occupants may not fully understand.
I'm a Xenos enthusiast in the 40K verse myself.
That said, I too have read an exorbitant amount of lore and exotic stories in the setting also. All the while enamoured with the unremittent volumes and vastnesses of the world because it's richly told throughout the stories.
The Primers in my book never went to lengths to inundate information unnecessary to the plot, they exist purely to describe where and who was responsible for whatever event or object was in question. To myself. The reader is spared this lecture.
Think - (for the aliens in the novel) their Primer is told somewhat - from the perspective of someone with a destroyed/incapacitated sample in front of them on an autopsy table. Arguing with another unseen individual about the theoreticals of the sample's composition and evolution. (They're not characters in the book, it's halfway between an analytical report, and an open discussion.)
I can quite easily write an encounter with an active, and functioning - or dead and incapacitated examples in the story proper. (Both happen - and are given over to character's examinations/experiences with them.)
But because the characters can give only limited descriptive or even allegorical depictions of the alien form, I felt the need to expand their origins and abilities aswell. Something which may take precedence later in the plot.
Now believe me when I say here: It's NOT telling my story... I know... It's supplementary to the plot, connected to the plot, it IS extraneous to the plot...
I knew this when I wrote it all.
It's World-building.
I know it is superior to have your character's stand at a porthole on the ship, watching the exterior pass by until reality is visually distorted to them to imply FTL.
It is far more immersive for the reader; than to have a plotless lecture - explain the intricacies of what enables interstellar travel. I don't need to write the manual on it.
This thread I designed to provoke a thought process about myself breaking the rules, with the intention of receiving confirmation to my hypothesis. Again, which I'm thankful for.
Everyone has kept me honest and from stepping too far into territory that would infringe on the cardinal rules of storytelling.
I do see a mild disconnect for Science Fiction on what are supplementary world-building conventions versus those in the Fantasy genre.
They can draw maps of their landmasses and continents and it not be considered so irreferential to plot.
But I can't deliver hypothetical short term knowledge primers to fulfill naming conventions and scientific concepts that are extraneous to the plot. It makes sense.
The map in a fantasy story isn't a plot device.
The encyclopedia of intelligent alien existence and human development since the discovery - isn't a plot device either.
Write the story. Show the world in prose.
Execute it well and people will read it.
I like to ensure that nothing new or untoward has slipped by me in my short tenure with life and literature...