I was one of the early adopters of the Project Management Professional qualification and held it for nine years from 2003 to 2012. I was reading about the PMETs who are losing their jobs and wanted to understand why there is such a wide gap between the skills desired by the markets and the skills which middle-aged PMETs like me have.
I also read a really badly written book called the Neo-Generalist by Kenneth Mikelsen, one of the worse books ever written in support of a generalist career which paints the picture of a polymath as someone who is a trickster, hipster, and has few practical skills. The book was a horrible experience but it gave some insights into how the modern economy is changing.
For a start, lets look at the typical engineering/IT career path for Generation Xers.
In your 20s, you start out with a Bachelor's in Engineering ......