RE: "classic OO design ideas experiencing a massive resurgence"

I don't know about that. I see a whole lot of functional paradigm chatter these days. That wasn't true 5 years ago as I recall.

Then again, I suppose it depends on what color your glasses are: If you're a classic OO devotee you see most of the techniques being put forth as classic OO, and if you know a bit about FP you see it all as the stuff that FP has always been made of, the stuff that OO gurus who cut their teeth on FORTRAN neglected to mention came from FORTRAN.