Rich Horton. The Year’s Best Science Fiction and Fantasy 2009.
A late arrival on my doorstep, and it’s taken much longer to finish the review than I had hoped. Note to self : faster dude, faster!
Rivka Galchen. The Region of Unlikeness. (Years Best Science Fiction and Fantasy 2009).
A well-observed and detailed interdependent-troilistic relationship in which the sfnal element relates to the well-established sf time travel trope of the grandfather paradox, but the writing is subtle and clever enough to justify adding to that trope.