"IT Professionals" is a broad label. Maybe we can think of getting a 'degree in a field' as a proxy-variable for 'interest in the field'. What's astonishing to me is through the 60s, 70's and into the mid-80s, computer-tech interest in female cohorts tracked with science, law and medical fields. Then it flattened and fell, while female participation in those other three fields continued to expand at the rates they had before. (So, what happened in 1985?)

This Planet Money episode attempted to tackle that question: http://www.npr.org/sections/money/2014/10/21/357629765/when-...

Their tl;dr answer is that video games happened, and they were marketed exclusively to boys; that's what created and drove the cultural rift.

Thanks for that link. My original sighting of the phenomena used the exact same graph, but made no attempt at being explanatory. I have since then, been searching, but failed to re-find a copy of that graph to stick into my files. Now, thanks you you, I have! Thanks!

Maybe it is not strictly necessary but someone with a CS degree is obviously going to be the preferred hire.

Firstly, that isn't true. Huge numbers of people learn to write code as part of a degree that isn't CS - for example, if you want someone to develop a GIS startup you'd be better off with a geography graduate who can write decent code than a CS graduate who probably doesn't have experience of GIS.

Secondly, if you hear "startup" and think "developers" then you're ignoring at least 50% of the work necessary to make the business a success, all of which can (and often should) be done by someone without a CS degree. There's a lot more to tech than writing code.

Fair points for sure. I would agree with this.

No, but also yes.