With the introduction of 3D printers on construction job sites, many are worried that robots will begin taking over the jobs of hardworking tradesmen.  It’s more likely, however, that workers will be working WITH robots long before we’re completely replaced.  For example, one company that makes exoskeletons to help paraplegics walk is also developing an exoskeleton specifically for constructions workers that will allow them to lift 50 pound pieces of equipment with one finger. Now, a former NASA and General Motors (GM) partnership has turned into an expedition into the blue collar fields.