itch.io

Thanks so much for giving it a read.

I can't speak for all GMs, but as I've played it:

Faction and NPC Sentences begin entirely secret, and are only revealed on use.

Moon Sentences can begin secret or public or some mix thereof, depending on PCs and their relation to the given Moon. If they're from the Moon in question, or have spent a lot of time there, they probably know the big ones. But a Moon might have some secrets (like the one about Daniley's Unyielding Engine) which they discover during play. Plus, Moons can have Sentences added on the fly by Players by spending their Tokens. 

In the Podcast play example, the public Sentences reflected that the character in question had been to those places before, encountered those Factions and NPCs, etc. Also, once a Sentence is public, it is marked in public and only through play--so players should always have the ability to know if a Sentence has been Primed and could potentially be Realized the next time they come up against it.

And important note: Illuminating failure doesn't require opposition, though it can include that, if you'd like. It requires only uncertainty. (That's also true for requesting a Means from a player, you don't need to have specific opposition, you can just say 'Hey, that sounds like something that might be uncertain. Do you have a Means to point to that would make it doable for you?')

Hope that helps!