Was anyone else horribly disappointed by the end of the story? What is the mysterious alien artifact that appeared in the sky? Why, it's a Boltzmann Brain. Was it put there by aliens? No, by our artificial descendants who escaped into an alternate reality where time moved backwards, and who managed to control the collapse of their universe so that all of their knowledge managed to be preserved in a giant stone of knowledge and send back to our universe (somehow, even though they're dead now and their universe IS the giant stone of knowledge). What a serious case of deus et machina. I guess that's fitting, given the title, but I feel it ruined an other wise well thought out novel.
So, in other news, I'm sure y'all know that the last shuttle launch is coming up soon. I'm personally excited that it's been delayed three weeks, that way I'll be home in Florida for the sonic boom. Apparently, they're sending a Robonaut into space this time. His name is R2 (I'm thinking he needs a friend named D2). They're going to have him do boring and dangerous things, if the testing goes well. Eventually, they might even send him to Mars.