"The other interesting thing is that summoning and dismissing apparently work as normal. So you can go home and come back, and we'll be able to summon changers too."
"Which is very good to know and means we're working with at least two universes here. Where did you land, when you landed?"
"Under a tree outside Camelot. I can show you where. Is it important?"
"Not the place - was anyone around? I'm wondering if somebody turned up a way to summon humans just as accidentally as you summoned me."
"It was near the city; there were people within shouting distance for sure. But nobody cackling maniacally or otherwise acting like they expected me to appear. And there haven't been any rumors that I appeared out of thin air, despite it being true."
"Any designs on the ground? If they weren't obvious then they're probably indistinguishable now..."
"Hmm. Well, if we detect any other time travelers we can check it out, I don't see any productive angles for investigating."
"I've had years to fail to think of any. And succeeded, too. I still don't know if I'll wake up and find myself back in Connecticut."
"Probably disappear. Hopefully it doesn't come up any time soon; we've still got a world to improve."
Presently they are back at Camelot and hand over the prisoner to the seneschal with the same instructions as the last one.
To avoid going back to the island with the hostile daeva, Hank hares off to see what the teenage boy contingent has come up with during the Constitution editing.
And Cam heads back to the new-made island to denature the poison and give the fairy and her king directions home. And a gift basket for their trouble. He offers them a ride, but the fairy prefers to go her own way, thank you.
The king is hugging his fairy more tightly than is probably necessary considering that they're levitating.
Cam flies away in his spaceship, the fairy and her king fly away with her bringing the air around them along too speedily enough to be comfortable, and Cam lands at Camelot in a fog.
When he sees Cam, "Welcome back. The wars are over, such as they were."
Next on the unending list we've got the edited constitution to distribute, we can get changers now to speed up the railroad building, and of course your Mars project. Any preferences for the order?"
"Not picky about the ordering. Mars can wait, I don't have anyone to put on it yet no matter how I pretty it up. But you are in for one heck of a safety lecture before I teach you to summon anything other than me personally and specifically."
"Right, you mentioned the lack of incentives to not destroy the world. All right, how do we screen for sane people?"
"That's not really the level on which I mean to safety-lecture you. Like, if you want to hire somebody repeatedly it should be someone sane and friendly and smart - but if you're sifting through random angels, pardon, changers, you need bindings."
"Fair enough. Given enough random changers, the continued existence of earth isn't something to take chances with. How do the bindings work, then?"
"I can give you books. The basic idea is - work in your native language, don't get cute, actually check for loopholes, and elegance and convenience means squat if it leaves a changer the leeway to turn your brains into mashed potatoes."