Remember: Just because an idea is old doesn't mean it's good.

Knowing whether old ideas are more likely to be good requires understanding whether conditions have changed in important ways.
Horse archery was an amazing method of warfare for over a thousand years...then people invented guns, and suddenly this great idea that had stood the test of time became obsolete.
Then again, when underlying conditions don't change much, tried-and-true approaches are probably better.
"Learning the lessons of history" usually just means assuming ergodicity and stationarity in an informal time-series model...

(end)

More from Noah Smith

Today's @bopinion post is about how poor countries started catching up to rich ones.

It looks like decolonization just took a few decades to start

Basic econ theory says poor countries should grow faster than rich ones.

But for much of the Industrial Revolution, the opposite happened.
https://t.co/JjjVtWzz5c

Why? Probably because the first countries to discover industrial technologies used them to conquer the others!

But then colonial empires went away. And yet still, for the next 30 years or so, poor countries fell further behind rich ones.
https://t.co/hilDvv0IQV

Why??

Possible reasons:
1. Bad institutions (dictators, communism, autarkic trade regimes)
2. Civil wars
3. Lack of education

But then, starting in the 80s (for China) and the 90s (for India and Indonesia), some of the biggest poor countries got their acts together and started to catch up!


Global inequality began to fall.
Yes, we have been more divided than we are now. Within living memory.


Labor disputes used to kill hundreds of people!

In 1932 Douglas MacArthur called in tanks on protesting veterans, injuring over a thousand people!

In 1967 there were 159 race riots in cities across

In 1921, rioters used airplanes to bomb black businesses in Tulsa, Oklahoma! Hundreds were killed in the riot!

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