On another Bostrom-related note, I was a bit disappointed by Seth Shostak's piece "Is Life an Illusion?" which is an uncritical take on Bostrom's ideas about living in a simulation. I would've expected Shostak, who's spent decades contemplating probabilities involving alien life, to have something more sophisticated to say about efforts to calculate whether we are characters in a computer game. Years ago, I expressed some reasons for skepticism about that subject, which strike me as still making sense. (I don't, however, claim to be up to date on the technical debate over the simulation argument, and I see that Bostrom in 2011 co-wrote a "patch" for his original case.)
UPDATE: "Elon Musk: Robots Could Delete Humans Like Spam." Strikes me as not a compelling analogy, given how difficult it is to get rid of spam.