Demographics and Productivity

News reports continue to obsess over the idea that China and other countries might run out of people if they don't increase their birth rates. The implication is that countries won't have enough people to do the necessary work to support a larger population of retirees. (It's worth noting that many of these same people worry about robots taking all the jobs. If it's not obvious that these concerns are 180 degrees opposite then think about it until it is.) Anyhow, the NYT had an article that r...