The economy is doing great, productivity is doing great, but there are increasing numbers of people with obsolete skills who can't find work and are struggling to survive this improving economy, through no fault of their own. A small number of people are taking all the benefits of the new economy - entrenching inequality.
The problem is with people, not with the economy.
Interestingly, muscle jobs are more-or-less immune as they have already been automated as much as is reasonable.
13. I.e., since 2000.
There will be new jobs, but fewer and fewer people qualify. Network effect and superstar economy mean that the distribution of workforce compensation will change dramatically. Majority of workers will be worth less. More of them will drop below the point where it's not worth to hire them.
Productivity is the ratio of units of output per unit of input, where you can abstract input as being either capital or labor. Indeed, productivity continues to grow as a consequence of technological advances. When mankind started using oxes to plough fields, landworkers' productivity rose significantly. As we develop more tools to aid us in daily tasks, less labor - and sometimes even less capital - is required to perform those tasks.
During the relatively prosperous past decades, organizations have grown heavy, and were able to do so because of a continuously rising product demand. People started over-working and over-consuming. Then there was an external shock, media started talking about a financial crisis, people started being more considerate of their consumption in the face of job insecurity, and businesses that grew too heavy needed to get back into shape. This is a process that has significant feedback effects. The process of business getting back into shape means the cutting non-contributing jobs (think of excess layers of management), which by itself causes a growth in productivity. In this sense, employment growth and productivity growth can be negatively correlated, and it is not necessarily "technological advances" that drive productivity growth.
Telling us that technology is destroying our jobs is the same as telling us that China is stealing our jobs, though they may affect different industries (I don't see Chinese laborers replacing our butchers.) The thing is that the working population is very flexible, and despite offshoring certain jobs the average American still works over 50 hours a week. Population growth hasn't justified job growth in the US for the past 40 years, so perhaps a stagnant job growth is a good thing in that it draws things back to "normality".