Faolyn
(she/her)
There's a difference between a farrier and the runes, though. With the farrier, they're part of normal life in a typical settlement. It's just that the GM didn't think to, or forgot to, include one when they prepped the village (assuming the village wasn't improvised to begin with). The farrier also isn't likely to be all that important in the long run--at least not without serious player investment to make them so. Also, because they're an NPC, they're effectively under GM control. I don't know the specifics of the systems here, but I'm pretty sure the players can't say "I want to find a farrier who will do all the work for free" because the GM controls that aspect of the farrier and there's nothing in the established fiction that suggests that this farrier would work for free.And in the play of MHRP/Cortex+ Fantasy, everyone knows that when the GM narrates a Strange Runes scene distinction, the nature of the runes isn't yet detailed and is up for grabs.
The equivalence is only false if one assumes that MHRP/Cortex+ should be played like your preferred approach to AD&D and 3E and 5e D&D. But that assumption would be mistaken.[
But of course they did. It's just that no one at the table yet knew what they said. Just as a village entails shops, so runes entail that they say something.
Well it wasn't a map; but that's by-the-by.
But yes: succeeding on a roll to read the runes with the hope that they will reveal a way out, entails that the runes reveal a way out.
As I posted, it doesn't change any fiction. It does introduce new fiction: the runes reveal a way out.
Runes, however, are something that the GM deliberately placed there. By letting the players "hope" that they mean something specific, then rolling to see if that hope is true, it becomes "I want the runes to be whatever I want them to be." And yes, the players shouldn't play on godmode and they should be sticking to the established fiction, but even still, this seems to inherently be playing on godmode outside the established fiction.
Now, I could see this if this were a GMless game, where either an oracle/random tables/whatever created the runes or one player made them and another player describes them. For a game like that, this would make sense. But is the game you're talking about GMless?