>complex scientific research, the details of an M&A deal, economic agreements between nations, or application source code. Most of those activities you listed

>complex scientific research, the details of an M&A deal, economic agreements between nations, or application source code. Most of those activities you listed are what a ’93 DOE survey called “level 5” tasks[1]. Only 3-4% of American adults are at level 5.[2] There was a followup survey was in 2003, but they combined level 4 and 5 [3]. There weren’t any significant changes to the other 3 levels, so I doubt level 5 increased either. [1] - http://nces.ed.gov/pubs93/93275.pdf http://nces.ed.gov/pubs93/93275.pdf, page 10 [2] - http://nces.ed.gov/pubs93/93275.pdf http://nces.ed.gov/pubs93/93275.pdf, page 17 [3] - http://nces.ed.gov/naal/kf_demographics.asp http://nces.ed.gov/naal/kf_demographics.asp