An interrogation, a Bar-recommended stimulant, and some variously expensive transactions later, Linyabel has a scanner sitting on Bar's surface, whirring away, converting borrowed paper books at many pages a second into sensible electronic formats, and she is finishing up a plate of loaded savory waffles and a slab of goose and a pomegranate pudding for her snack-plus-added-stimulant-related-
"He's pretty unlikely to narrow it down as far as Earth if he doesn't know of the place, and if he does it will be because I told him about it, perhaps mentioning you."
"Yeah. He explained the circumstances of his existence and I summarized the ways my world is different from standard 1986 Earth and we both think Ivan is lovely."
"That's how Ivan can tell the difference between Mark and Miles. Miles doesn't like Ivan quite that much and Mark can't fake it. I just bought a medical scanner."
"Emily mentioned that our world was divergent from the standard 1986. I'm a telepath."
"And what features besides unhelpful comments does your telepathy have?"
"If you're asking if I can read minds, the answer is 'yes, but I don't on nonconsenting targets.' I haven't observed anything more of your mind than that it exists. If you're asking if I could do things to peoples' minds the answer is 'theoretically but I've never tried it,' because finding a consenting volunteer for that is neither trivial nor something I particularly care to pursue."
"Uh-huh. Telepathy is one possible manifestation of a phenomenon that Ivan was particularly startled when I referred to it casually because we're called mutants."
"He eeped. He apologized for it later, which from what was later said was fantastic for someone raised on the infanticide planet."
"...It's not principally characterized by infanticide and if you meet Miles I don't recommend describing Barrayar that way, but yes, Ivan is between Miles and me positively enlightened compared to some people on Barrayar."
"Skeptical that a mutation would produce a telepath? Well, I would be too, if I hadn't been talking to Bar for hours. I'm sure you're working on some kind of revised physics relative to our own, but that's bog-standard for Milliways, it seems."
"Skeptical that a mutation could produce someone who shoots plasma beams out of their eyes but the Cetagandans hadn't been able to do it on purpose."
"Well, he is not fully apprised of all the considerations that go into deciding exactly what the Cetagandans will and will not engineer, but there are engineers nearly so clever and much less restrained. Tetrachromats, of course. Winged people, yes - Cetagandans have done that, even, although it hasn't been rolled out into general use, interferes with other desiderata. Plasma eye beams - no."
"Which is genetically doable but absolutely preposterous as a single-step mutation - on my world. Not that I wouldn't be intensely curious to have a look at samples."
"Mutant's a bit of a misnomer. What we have is one gene that activates a lot of what would otherwise be junk DNA. It's recessive, so when you have two perfectly normal people who have a weird kid--it looks like a mutation."
"And yet humans have no ancestors with wings, nor plasma eye beams - on my world at least - so the junk DNA explanation also does not explain single-step wings."