... when Neil Gershenfeld says that there is no way to build large complex nanosystems using traditional engineering, I listen very carefully. I have been thinking that large-scale nano-based products can be designed and built entirely with traditional engineering. But he probably knows my field better than I do. Is it possible that we are both right? I've read his statements very carefully several times, and I think that in fact we don't disagree. He is talking about large complex nanosystems, while I am talking about large simple nanosystems.