A zombie is a rotting body; once all the flesh is gone.. is it a skeleton warrior, or does it expire?
If you cut a zombie in half (or tear off the limbs etc), which parts are ‘alive’?
If they can become skeletons or nearly so, can they go underwater without lungs? Outer space?

Things have been busy, so little Pandora firmware work of late, but I just saw a note that advertising may reach into ebooks. I tell you this now – the day they add adverts to books, is the day I stop buying books. I draw the line there dear friends.