The big question: how long will it take for this form of manufacturing to achieve the cost effectiveness of current methods? The bottom line for everyone, including consumers, is cost. Don't forget about quality control.

Let's also not assume that we will always be the most innovative. We have to make sure that the current and next generation of students get the quality education they need in math and science to keep us dominant in Tech. Interesting article but lots of assumptions and unanswered questions.