ok IF they can invent flying killer bugs then why not invest the time to build better replacement joints....
uggg!
http://abcnews.go.com/Technology/wireStory?id=2660621
if nanotechnology can let them build a wasp that can kill you then could not nanotechnology build better replacement parts?
self replicating nanotubes to help make better joints
http://www.nanoxchange.com/NewsEducation.asp?ID=275