3D Printing has evolved over the past 25+ years. It is amazing how many folks have recently entered the industry and become enamored with technology. After speaking with them a few minutes, they start sharing their "new" ideas about new businesses, applications and directions for the technology. However, many of these "new" ideas are over a decade old and ideas that the veterans have come up with, and in many cases, tried and failed. It's like a time warp thing where you are going to back in time but you already know the future.