If your conversations with digital personal assistants like Apple's Siri, Microsoft's Cortana, or Google Now haven't been useful enough, a new challenger of Biblical proportions is about to arrive. Gabriel, a project by researchers at Carnegie Mellon University, and funded by the National Science Foundation, is a personal cognitive assistant that "whispers" instructions into a user's ear, for things like how to change a tire, perform CPR, or even assemble IKEA furniture. It would be like GPS for everyday actions, but one that knows when to shut up, according to principal investigator Mahadev Satyanarayanan. The name comes from the angel Gabriel, who Biblically served as the messenger of God. CMU's Gabriel is just a software platform, though.