Work, today's XKCD installment, hypothesizes the latent, invisible human effort that went into the everyday things around us, from the hours of meeting-time to decide upon the length of the stem of a goose-neck lamp to the career-ending engineering argument over where to put its switch. It's a kind of preview of what augmented reality could bring, the embodiment of the spime idea, where the full costs and histories of the things around us cluster around them in complicated, emotional clouds -- an idea that's been around since at least 2006, but that is feeling increasingly likely with the passage of time. Read the rest