Manufacturing jobs are disappearing but real manufacturing output has actually been steadily increasing over the last 50 years.
I understand an economy that does not produce any of its own goods is in a jam -- it's an external critical dependency that can be wielded like a club against you. But if you have adequate internal production, what does it matter if it's done by humans, robots, or hyperintelligent cyborg orangutans? It may take a generation or so, but the people who would have been manufacturing labor will be absorbed into other markets -- or should be, as I understand it.
If "absorbed into other markets" means "wal-mart greeter", then that's bad. I'm all about efficiency and won't advocate make-work jobs, but if you don't have a base of demand in the form of a healthy middle class, it's hard to find people to buy the goods that you do manufacture.