Human is?

[MicroBalrog]

And yes, medical opinions are sometimes wrong. And yes, miracles do happen.

Exactly, which is why I, PERSONALLY, being an optimist, would never, ever "Sign the Papers".

Moreover, if I became ill and odds would be that I would at some stage lose consciousness and become comatose, I would leave a letter/note to my family or friend to the air of "Do not sign the papers, no matter what they say." But that's just me.