[ Cortana watches the video with great interest. This is certainly a new development, and not one she had anticipated. Glass, but still able to move? ]

Your circumstances seem to be quite unique. I've not yet heard from anyone else who can actually move any part of the limb that's been turned to glass. And most seem to experience discomfort of some level.

[ A thoughtful hum. ]

Very interesting. I wouldn't have expected any glassed parts to still have any sensation at all. I'd say you're quite lucky, all things considered.