Today's reading
"Historians" visit other inhabited earths to document history and coax events toward more humane civilizations. Problem is, history is less predictable than theorists would like, and stubborn. This gets an enthusiastic Yes Yes Yes from me, for the kind of uncomfortable thought-provoking speculation that reminds me why I love this genre. Not crazy about the sexed-up cover by Kelly Freas, which seems to have been designed for some other book.