John Lawson wrote on Mon, Oct 27, 2003 05:51 PM UTC:
From the rules:
'The Go Away can be petrified, and a petrified Go Away is mute.'
So a petrified Go Away is just another piece of impedimenta on the board,
and its scream is a resource that is no longer avalable.
As for petrified Humans promoting to Zombies anyway, that might be
interesting to try out. In my limited (four games) experience, even
petrified Humans got nowhere near the far rank. One's tempi were better
used elsewhere, specifically in maneuvering the Basilisk, Ghast, and Go
Away.