[chipmonkey75]

"Breakthrough" is a tough word here...

How about the TurDuckEn? https://en.wikipedia.org/wiki/Turducken Or the Pake (PieCaken, Cherpumple, or whatever you call a pie baked into a cake).

I'm at least half serious -- the arts, including culinary arts, is a place to look. The color indigo comes to mind as an older example (even if science discovered it, it was a breakthrough due to its adoption in art and fashion)... lately Black 3.0 (or Vantablack) may have made enough ripples to count.

Have there been Legal or Political breakthroughs? Was reopening the Cuban border a "breakthrough"? Is electing female world leaders a "breakthrough"? Legalizing gay marriage? Marijuana decriminalization? I could make an argument for any of those.

I'd make a list of what you think "non-stem" areas are (by career, maybe) and look into that. Finance, real-estate, mechanics, art, fashion -- they probably have "breakthroughs" that people outside the fields are not familiar with, at various scales.

[jhanschoo]

OP is talking political theory, which is different from what you cite, which are political outcomes.