It's what it looks like. [Which should be obvious, and he knows Callaghan's a smart man, so no need to state it outright. He eases the prosthetic down onto the counter and runs his hands over it, prodding at moving parts that simulate real muscle action, tipping a heel that rotates around something close to a magnetic servo - congratulations, Robert, now you have the opportunity to make your own tech a part of you.

Not that that hasn't already happened, in a way.]

I did research before putting this together. The actual machinery is top of the line - it'll do anything you could ask of a limb you grew yourself, maybe more, too. It's lightweight, durable, and made of good materials, so it'll last a long time.

[Maybe it should be a surprise he did this at all, but he's not going to say anything. He'd rather just treat it as a given...one of those situations where somebody had to do something.]

The real challenge is...responsiveness. Making it accept signals as well as the real thing. Which would normally require a highly delicate surgical procedure and a lot of PT, but since we don't exactly have that option...

[He shrugs. He's still watching Callaghan, surreptitiously, looking for - something. Approval?]

Well, look. For now it has highly sensitive smart skin patches you can attach, and a fiber-optic interface, which is good, don't get me wrong. But if we could figure out how to tap into whatever it is that lets you control those without the mask...

[His eyes flicker briefly to the microbots, and then back again.]