Tech talk, cold comfort.

Showing a rather shocking disregard for the long-term safety of human civilization, Microsoft has become one of the first companies to deploy autonomous robot security guards. Dubbed the K5, Microsoft's Silicon Valley campus was being policed last week by five of these roughly human-sized 300-pound (136 kg) robots, each equipped with enough cameras, sensors, artificial intelligence, and alarms that they can replace most human security patrols. Fortunately, despite looking like uncomfortably like a Dalek from the Doctor Who universe, the K5 is not (yet) equipped with a ray gun or any other method for harming or detaining humans.