Shrug. "Be ready to pull something next time they wind up summoned here."

"That's what bindings are for. The biggest risk in breaking infosec is having nothing to pay them with next time."

"...How would that work?"

"If one of, say, John Doe's written works is a biography of Sarah Smith they're confident enough Sarah is a real person, they can conjure up Sarah's written works, and Sarah wrote letters to George so they can get anything George wrote, ad infinitum. Computers make this much less of a chore than it might otherwise be. I'm far from certain a random maker would attempt it, but from what I've heard it's possible."

"Well, if that's likely we should delay summoning one as long as possible in case we only get one shot."

"Makers are summoned now and then back on the other Earth, enough new content is generated over a given month that they can find something interesting. And some will do it for recommendations that they could theoretically already have accessed themselves. But yes, it should wait as long as possible."

"Changers don't have this problem?"

"No, they 'do their own detail work' so to speak. They can't change something into a hard drive containing someone's entire written works without having those entire written works as a reference. And even then it'd take a long time."

"So we'd need to actually get them the books instead of just saying they exist and we'd have to get one who knew how to do anything fancy but they're not such a potentially finite resource."

"Yes. And they'll take electronics like some of my tools or the spare tablet from my house, once I wipe it of course, and I can provide blueprints for simple but hard-to-make things, ceramic junctions and so on, so we don't necessarily need to find an engineer-changer."

"Would they be likely to be able to provide references if we did want a specialist?"

"I think so but I don't actually talk to changers much. I have a couple of changer pen pals but the only time we can actually exchange messages is when the concordances line up."

"The what?"

"Concordances. When the four realms sort of - cross into each other. They happen once every decade or so."

"That's a new wrinkle. Would a changer or another fairy leak info to the makers?"

"...What happens to them there?"

"Being bored, for the most part. Limboites are as indestructible as daeva are, but no extra magic powers beyond that. They get one thing, I think the rule is that it's their favorite thing, or the one thing that they think the afterlife would be wrong without, and it's otherwise a featureless infinite beige plane. Some people get houses, restaurants, hotels. They either share, or are made to share. Some people get their dog or a game console or a car, all sorts of things."

"Can they be summoned? They sound like they'd be trivial to pay - we could pay them with 'not being in Limbo', for starters - and the indestructibility alone would be an amazing asset."

She waits.

"Uh. Yikes? So they might be summonable or not."

"Right... I can make guesses at circles that might do it if it's possible at all."

"Is guessing at circles dangerous?"