Mark Avery and I have certainly been in sync (as the kids say these days) with what books we’ve been reading. No sooner had I picked up the recently arrived advance review copy of Michael Blencowe’s forthcoming book “Gone; a Search for What Remains of the World’s Extinct Creatures” than I happened to open up Mark’s blog to see what he had reviewed this Sunday and what-do-you-know; it was “Gone” (the book “Gone,” that is; Mark’s blog is very much still there).