I have to confess that I read this as his grandmother _acquiring_ immutability, the way, say, one might _get_ "+5 health" in a game. Why you'd want an immutabl

I have to confess that I read this as his grandmother _acquiring_ immutability, the way, say, one might _get_ "+5 health" in a game. Why you'd want an immutable grandmother, I'll never know.