Can you name an example?

Thou, it's not actually a death spiral but rather the ideas of "eternal laws" or rules or constitution.

@ETBrooD Funny, almost all societies with long history are.

Especially the ancient ones.

Take ANY culture with millennia of history and you would see the pattern right there.

They had a period of boom.

What a great argument

Name a country and a period

They established a culture that was stable through tiem and then they got into a stagnation.

If there were so many you should be able to come up with one example

Classical example-Rome.

Rome wasn't stable lol

They had their boom-they managed to develop advanced social norms and technology for the time.

It paid out very well into the conquest of others and infrastructure no one could have matched at the time.

What time period during Ancient Rome are you talking about?

The period when they experienced stagnation?

Due to stability

But then, they got into their peaks, they stopped innovating, their social norms degraded, there was a time of diminishing returns in economy and technology and eventually the empire collapsed.

@ETBrooD Have you ever heard of Pax Romana?

Of course I have

I particularly would like to refer to the period of the late 1st century A.D. till the late 3rd century A.D..

They peaked but stopped innovating.

Why should they had to?

Maybe they stopped innovating because they reached their peak, that's kind of implied

They had everything already-big empire, plenty of land and slaves and developed trade network.

Stagnation.

That's not stagnation rofl

And as the result of the stagnation eventually they had to scale down which they couldn't and then, they faced collapse.

If we use this reasoning, then computer science is currently "stagnating", too

@ETBrooD It's kind of stagnation-an ideological one.

That's nonsense

If you reach your peak, you're not stagnating, you simply reached your peak

Thou, it translated into a more profound change.

Stagnating is when you *could* get further with some effort, but you don't

For example computer science has slowed down, contrary to old predictions

That's not stagnation, that's just because we reached certain limits

So the argument that "reaching your peak" is stagnation is already false

Reaching a peak is stagnation.

https://www.dictionary.com/browse/stagnate

"to stop developing, growing, progressing, or advancing"

Idiot.