I don't know. I've had a "new every two" experience over the last decade, and I still use "old" languages (C, C++, Fortran, even some Ada). I'm in my mid-30s,

I don't know. I've had a "new every two" experience over the last decade, and I still use "old" languages (C, C++, Fortran, even some Ada). I'm in my mid-30s, and my view is that the kind of person you're talking about isn't restricted to any "emerging twitterati" culture. "Fad followers" exist in every age demographic. Also, my "new every two" experiences give me a lot more breadth of experience than some poor "lifer's" years slogging away maintaining his project. It also gives me more depth in each area--because I haven't been fossilizing over the same code, in the same language, for the same project, day in and day out. As an edit, I'll add: the (relative) ease with which (some) of the "youth" in our profession are able to switch things up so regularly ought to be viewed as a virtue. I can't stand the culture of sharing all the intimate personal details of their lives on the internet, but this is one thing which in my view they do right.