Bring stability, and people learn the mechanisms that works for their society, and overcome surprisingly large differences in type of obstacles. Be it dealing with the vagaries of the free market, or how to maneuver a Soviet-style bureaucracy.
It's in fact almost depressing how little effect even quiet massive political changes appears to have on growth on "just" national level relative to the effects of larger global trends; but an alternative view is that it shows humans abilities to work around messed up political limitations.
This era ended by the USSR assuming the most stable position possible, i.e. dead. So I wouldn't over-promote the value of "stability" as such. Being stable is good if you're in a good place, otherwise it's deadly.
The 70s and 80s provided slower growth, sure, but still growth. As far as I can tell there was no drastic decline in GDP per capita growth for the Soviet Union until towards the very end of that period, when the rapid changes from Brezhnev to Andropov, to Chernenko, to Gorbachev disrupted the already weak growth.
It's not that I'm suggesting everything will grow the same irrespective of regime or system, but that the correlations are much weaker than most people will assume.
"Disrupted" is a bad word to use here, it's like saying a surgeon "disrupted" a body of a dying patient. Gorbachev had no choice - the Soviet economics was dying. There are many books and doctoral theses written by now about how exactly and why it happened, but what you describe as "slower but still growth" was the process of slow economic collapse. Nothing worked properly by the time he took over, basically. He tried to deliver some CPR and defibrillation by introducing sort of NEP 2.0 (hey, it worked for Lenin!), and "acceleration", and "perestroyka" - but it was way too late. By then, the collapse was inevitable.
And it's not like the top Party functionaries didn't know that - they were aware of it in the early 80s (in 1984 they started introducing kinda sorta markets between state enterprises - see Khozraschyot) and by the late 80s they were in panic - that's why Gorbachev had to "disrupt". Because they had to do something to try and save the collapsing economy. Unfortunately for them it was impossible.
- Orson Welles, The Third Man, 1949
Ancient Greece was also exceptionally politically unstable and yet produced the foundations of Western civilization.
It makes sense that a guy like Welles would value art and throw scorn on technology. Stability is necessary for investment and the build-up of capital; it isn't necessary to make a painting.
There’s something missing in our appreciation of the Renaissance, says Paolo Galluzzi, professor of the history of science at the University of Florence-something very important. While we rightly glorify this period as an extraordinary flowering of humanism and the arts, most of us have overlooked the engineering accomplishments that were just as much a part of the Renaissance as the “Mona Lisa.”
https://www.technologyreview.com/1998/01/01/237121/the-art-o...
Assuming Nobel prize work is likely a decade or more in the making, I'm thinking all their European competition was busy trying to stay alive?
At least that's something I could hang on my wall.
E.g. compare the UK and France over the last 20 years, and try to spot when France cut working hours.
Or look at China under Mao, with the frequent political changes, vs. under Deng. It's tempting to think the growth under Deng happened because of his economic reforms, but the growth started before the reforms. Just like growth started every time things settled down under Mao too, only to be severely disrupted again and again.
Look at Africa, and match GDP growth against peace vs. war in different countries.
Also, I did not speak about innovation. I spoke specifically about economic growth. Economic growth is affected by innovation, but it can go very far with little innovation.
[EDIT: Also to your mention of 'technocratic socialism' vs' markets, the two are not contradictory; many socialist ideologies favour markets as the primary resource allocation mechanism over planning]
I also suspect that rather being merely inefficient, their leadership might be actively opposed to economic growth and could be suppressing it deliberately to keep their population poor and hungry.
I'd also say that great social skills are just as important today. Society is not meritocratic, you can have best idea, the best solution to a problem if you can't sell it or react appropriately to criticism (even to you coworkers) you're going to be frustrated. I'd that sometimes include being "cunning" if the person you're talking to is not being honest you don't have to be either.
Seems like corporate America to me...
Meanwhile in SSRS-style society, there's a single point of approval. There's no market of ideas/thinking. It's set by power games, usually not related to the subject at all.