The @ reply has long been cited as an example of Twitter's organic growth, having birthed from its users rather than a San Francisco office -- but who really started it? After some in-depth sleuthing, early adopter Garrett Murray now credits the ad hoc invention to Richard Andersen, who gave kudos to an especially dedicated (and injured) compatriot on November 2, 2006. The origin day most accept as part of the common legend, November 23rd that same year, was more of a happy accident where Murray and others decided to use the the now famous shift-2 keypress to clear up their conversation paths. When you see the @ reply front and center in modern Twitter apps, then, raise a glass to Andersen's unintentionally avant gardemicroblogging.
3D printing may still be in its infancy, but at least one Airbus designer sees things progressing quite a bit over the next 40 years or so. As Forbes reports, the company's Bastian Schafer has been working on a new concept plane for the last two years with other Airbus designers -- one that would largely be "printed" using a hanger-sized 3D printer. "It would have to be about 80 by 80 meters," he told Forbes, adding that such a thing "could be feasible." According to Schafer, 3D printing could not only lead to some significant cost savings, but also allow for parts that are 65 percent lighter than those made with traditional manufacturing methods. Naturally, the concept plane itself is also a showpiece for a raft of other new technologies, including a transparent wall membrane, a 100 percent recyclable cabin, and "morphing" seats that could harvest body heat from passengers. You can get a peek at what the plane might look like in the video after the break.