That's the title of an article from Forbes, which you can read here.
It tells us which jobs are expected grow faster in number than average, which will grow slower and which will actually decline. But what if people make career decisions based on these projections? Say alot of people go into a career that is expected to grow. Will this be a good decision for those people? Maybe not. If you go into a career that alot of other people are entering, the wages might be low or not as high as you expect. It's like when you hear about the best places to live. If they are so great, alot of people move there. Then the cost of living goes up there and although it might be a place with many benefits, you are now paying for them and living there is not such a great deal.