Gregory Mankiw on productivity and technology:
When do you think manufacturing output reached its peak in the United States? The answer: right now. Manufacturing output achieved a record high in the most recent quarter of data. The nation’s manufacturers are now producing 47 percent more than they did 20 years ago.
What has declined is manufacturing employment, which is 29 percent lower than it was 20 years ago. Producing more output with fewer workers is called higher productivity, which in turn is driven by technological innovation. This change is hard on displaced workers, but it is good for the economy over all. Rising living standards are possible only if productivity increases.
Read more here.