Cam is dipping a grilled cheese sandwich into a bowl of tomato soup when he feels the summons. He goes ahead and grabs it. Doesn't even drop the sandwich.
In they go. Mark exchanges an absolute minimum of words with the receptionist, obtains a keycard, and leads Cam into the lift tube and up.
It seems like a very nice hotel, much nicer than the intelligence agent's.
"Swanky," comments Cam in the lift tube. "So what is it that you do besides leave little mysteries for your pursuers?"
"Eh, if you don't want to be cryptic then accidental crypticism just means a few extra layers of increasingly precise question-asking before I learn things. If you wanted to be cryptic I'd probably flip you off and wander around to eavesdrop and browse bookstores until I knew what I wanted to do next."
And here is the room. It's medium-sized and cozy and has a little sitting area with a couple of armchairs and a round table. Mark sits.
"And now I'm close to certain that no one knows we're here or could listen in if they did."
"Cool. So pretend that I'm from - mm, history's obviously diverged considerably - pretend I am from 1990, and give me the executive summary of things that have happened as pertinent to the modern-day layout of this-and-that?"
"And of course I expect wordcount-conscious emphasis on the important parts. I'm immortal, not patient."
"All right, let's see... sometime in the early twenty-third century, ballpark of 2230, humanity invented jumpships and immediately started colonizing every system they could find that was more than barely habitable. Emphasis on the ones that already supported some form of life, because clearly they could be made to support ours. I'm not sure exactly which planets were established in that first wave - Escobar and Tau Ceti, I think, and maybe Zoave Twilight and Illyrica. And Barrayar. But Barrayar suffered a mishap: a collapsed wormhole cut off their route home while the first bunch of colonists were still settling in. So while the rest of the wormhole nexus kept right on merrily exploring and colonizing and advancing, Barrayar descended into near-Bronze-Age near-anarchy and then started over from there. Some centuries went by. Plenty more planets were colonized. I'm going to deliver a shamelessly skewed perspective and mostly talk about the ones that feature in my or my family's history: Jackson's Whole, Beta Colony, Komarr, and the Cetagandan Empire."
He pauses, then asks, "I don't suppose you can conjure me up a map of the wormhole nexus? This will be a little easier with pictures. Holo, please; two dimensions never feel like enough."
"I need slightly more to go on than 'holo'. A brand name should do." But he does conjure up an instance of his own computer and start taking notes.
"Let me see... I think the last decent map cube of the wormhole nexus I saw for sale was AstroCart. Now there's a company that is aware of its niche. Although they also offer system, planetary, and subplanetary maps."
Cam hands Mark a cube. "Please do not attempt to abuse my ignorance about what things there are to conjure, by the way."
"As in, if you ask me for a make and model of something and I hand you a mystery object shaped like a Platonic solid and then it turns out I didn't really want you to have that sort of object and only didn't recognize what it was supposed to be, I will not be best pleased."
The holo flickers on, displaying a lot of planets - or perhaps the spheres are meant to represent entire solar systems - linked by straight or smoothly curved lines. Mark starts pointing out the relevant ones.
"This bunch all coloured lavender is Cetaganda." A nest of eight orbs curving up through one side of the diagram, some connected only to each other, but the outer ones have links to almost every part of the nexus.
"Over here in pale yellow is Escobar, our current location, not quite completely irrelevant to this story." It's very central, with links to many other systems.
"That one's Beta Colony, site of the invention of the uterine replicator sometime around 2750 and birthplace of my brother's mother." It's beige, and has several connections but not as many as Escobar. "They don't have much going for them other than technological advancement; the planet's a windswept sandy rock, all permanent habitation located underground to protect it from the heat and the wind."
"The bright red triplets over here are Komarr," he indicates the one with lots of lines coming out of it, "Sergyar," the one with lines to Komarr, Escobar, and Beta Colony, "and Barrayar," the one with only a single line connecting it to Komarr. "Original wormhole route to Barrayar not pictured."
Pointing to a more distant planet in pale blue-grey: "That's Jackson's Whole, where I was born. Oh, and that's Earth," in deep turquoise, almost on the opposite side of the map, "where I grew up."