HI:
Think about people that have been fired in your working career.Short of a plant closing down, the reasons have been based on lack of(or inappropriate) human skills.
My background is Engineering but by nature I was always outgoing.It was my people side  that moved me through life as much as my ability to code(Fortran in the old days) or preform differential calculus ad nauseam.
I have encouraged my son to use his engineering background in the field of engineering sales to better learn how to blend two streams that tend to attract very different personalities. 
My race(retired) is run with some what of a Bolt out come(3rd by 100's is not bad) and I can see a De Grasse future in my son(with the occasional hamstring pull) using that technical/people skills blend.

" It’s human skills – not technical skills – that we need the most in today’s work force"
This is like saying that you need money as opposed to good heath in retirement.
No we need both!!!