[ Ew. Well, now they're gross, thank you. Fitz's nose crinkles up slightly, not unimpressed with the description. ]

For medical reasons.

[ Obviously. ] The brain controls lots of things. If part of it's damaged, you can— well you can't fix it, really, but you can identify things. But since the ship's got nanites, I thought maybe it'd be better at...

[ A pause while he considers it, then he offers a light shrug. ] Fixing.