"But seriously. Thanks."
Yvette prods at her power a little bit more with Addy's help. She wrestles a better copied-item organization scheme, and this helps her get faster with everything else, but a lot of it's just going to come down to practice. Her power is very stubborn about being touch based, though Yvette is optimistic about persuading it to work from her nails and hair instead of just her skin.
Eventually it is nearing the time that humans will cease sleeping! There's more work to be done on Yvette's power, but she seems to have the right sort of mindset and has already proven to apply herself from the beginning to improving it. She and Blair depart.
Yvette goes back to Oxford, because gosh, she has got some more chemistry to learn while she plays with her power!
Knock knock, Cullens, guess who's there?
"Welcome, Blair," says Esme, with a hint of reproach for Edward.
"Come in," Edward says, "but I don't think I want the copy witch to know I exist, if she's as you're thinking."
Inside he goes. "She is exactly how I'm thinking. Not wanting to see her is fair; I haven't mentioned you at all. ... But I do think that if you can you should work on your power a bit, I get the impression that a lot of them can really grow if you put in the effort. And then if you don't, it's stuck like it is forever."
"Is there some particular expansion...? And I've been a vampire longer than you have, anyway. It may already be stuck."
Blair thinks 'the ability to turn it off' is a pretty good idea, because always-on mind reading sounds really obnoxious when you don't want to hear everyone's thoughts.
"Edward, most covens manage all right without a telepath. You can have a break from looking out for us," Esme says.
"Even so."
But it is ultimately up to Edward, and he will shoo if Edward doesn't want to try it at all. If he does, though, he's got Blair's help.
"That's not the only thing possible," he points out, for Esme's benefit, "if you don't want an off-switch."
"I don't think I can get my power to do any filtering for me, and increasing my range would be more curse than blessing."
But Blair can't really get a good idea of what direction his powers might go if pushed, what are Edward's thoughts on why this is his witchcraft?
"Stop me if this is getting annoying and you'd like me to stop bugging you about it."
"I was always very good at reading people. I don't remember it very clearly, but... I could tell if they were lying, distracted, angry, manipulative. And now I get more detail and more distance. It's already a remarkable stretch. I suspect it doesn't go any farther and that it's incompatible with the nature of the power for it to only work when I try, because social reading is so automatic."
So personalized off-switches got rejected and an ordinary off-switch got rejected and filtering's a bust and range is a bust and extra detail seems to not be a thing Edward wants to aim for, social, social -
(He is getting the impression that Edward seems to want to be a bit tortured by his power, and this seems like a thing that might be mildly unpleasant and like something that Edward might like to stop, Blair is kind of confused.)
Ah-ha. Okay. Hear him out. Social is more than just reading other people. It's not just a thing that happens automatically. The thing about social is that it's communication. Proverbial reading goes hand in hand with proverbial writing. They are literally using this for communication right now. What's stopping Edward from gaining the other side of this social interaction? That is, telepathy. Or if that's too far, figuring out how to word things so that Edward will be easily understood.
He clarifies that he is brainstorming and that if Edward thinks there is a direction his power can jump, then they should definitely do that.
"Oh, I did try sending messages back, when I was new and didn't know quite what I had. It didn't work."
"You seem very fixated on this," Edward remarks. "I 'hear' thoughts, but it's synaesthetic; I composed messages in the same medium and tried to aim them at people. Nothing happened."
Also, Blair has ideas for why that wouldn't work. Edward's getting thoughts in his synaesthetic format. But thoughts don't work like that, there isn't a universal thought language. Some people think in the color of music or the texture of trees or a number of other things, just shoving what Edward gets at people in the same format doesn't seem like it would work, it seems like Edward might need to know who he's talking to. That just makes sense for social interaction, it's all translation from all of the different ways people think, and language is just the major medium used.
"Yes, believe it or not, I know that people think differently, Blair. It was more complicated than what you're thinking; verbalizing it is simply challenging in a language that was not designed for discussing all the possible flavors of telepathy. It still didn't work."
Uhhhhh meta power for guarding his own social equivalent of 'body language'? Protect himself against other mind readers? ... That's damned impossible to test, not the best idea.
Ferrying thoughts he gets to other people? Something to get the general feel of a crowd without having to personally read every single mind present? Not that this is a problem, he's a vampire, nevermind there. Range extension for people he knows? Blair almost thinks 'way to tell if they're vampires or not' and then recalls that Edward wouldn't have the same problem he did, so he quickly skips over that.
... Is he sure he doesn't want to try for the thing that lets him turn it off for certain people of his choice? That seems just useful without the stated downsides he's mentioned so far.
"If my power wanted to orient defensively I could try it against you," Edward points out. "But it might be a drawback if the Volturi visit. Wouldn't want to look like I have something to hide. My range for people I know did grow over time. Though it's hard to disentangle from my knowledge of people growing while the span of possible ranges was fixed, I suppose. And - emergencies are seldom, but if I had been giving Carlisle privacy when he found Rosalie, I would not have been able to warn you and Yvette. As an example."
Blair gets the implication that the thing to worry about for the Volturi is not them thinking he has something to hide, but them thinking that they would like him to join them. And if he makes a defense, assumingly he could drop it, in which case, they'd see it as a sign of trust. ... Of course, he could always figure out how to just hide certain things, make everything else look ordinary... Bad Blair, don't go thinking of ways to subvert the Volturi, that is how you get set on fire.
Personalized off switches unless a person thinks his name? He doesn't have to use it if he doesn't want to, but there might come a time when he would like to, and it'd be a shame if he couldn't.