> However, in so far as HN is an avant-garde community, its adoption of tech and practices likely foreshadow adoption writ large.

I'd love to see an analysis on this thesis!

Or more generally, how various sources of new-hire job descriptions correlate with each other: HN Who's Hiring and other job-advertisement boards; LinkedIn profiles; etc.

And same thing for programming languages: appearance in job postings vs. TIOBE index vs. ...