I remember being really annoyed at the reaction to that video. Here's 2 headlines from the first page of hits: "Elon Musk Waves His Hand and Designs Rocket Part

I remember being really annoyed at the reaction to that video. Here's 2 headlines from the first page of hits: "Elon Musk Waves His Hand and Designs Rocket Parts Out of Thin Air" and "Elon Musk to build rocket ship parts with hand movements through the air, and 3D printing". His tweet before that video was "We figured out how to design rocket parts just w hand movements through the air (seriously). Now need a high frame rate holograph generator. Will post video next week of designing a rocket part with hand gestures & then immediately printing it in titanium". That's really disingenuous. First of all, it looks like a typical demo made by an intern and some toys. Second, mechanical engineers don't need or want that type of interface. Actually manipulating and rotating CAD is such a small part of the process the time sink (aside from all the design and documentation aside from CAD) is adding dimensions and relations to geometry and relations. This video is the equivalent of a software developer's manager showing off a visual programming language and declaring text-based languages and keyboards are obsolete.