[Tadashi takes the super obvious hint and backs off, an appropriately chastised expression on his face, because Hiro's right. He probably will do it again. When it comes to protecting Hiro, he'll always do it again... but now's not really the time for this discussion. Not with Callaghan trembling on the ground and Baymax delivering a diagnosis like that.

Tadashi tries to keep up a strong front, but the thin-lipped grimace and the tightening of his shoulders give him away pretty obviously. And maybe the shade or two paler his face goes. Amputation?]

I- Certain emergency procedures are permissible, but... [But there's so much legal red tape in the way of something like that. So much more research and testing and licensing and other government approvals... One day Baymax might end up in the operating room (or another robot modeled off of his original purpose and coding), but Tadashi's always figured it would be decades before that happened.]

No. He has knowledge of how to treat accidental amputations, but not how to preform one.