Hello,

More of my philosophy about China and PISA scores..

I think i am smart, and i invite you to read the following
article that speaks about China and its PISA score:

China is No. 1 on PISA — but here’s why its test scores are hard to believe

https://www.washingtonpost.com/education/2019/12/04/china-is-no-pisa-heres-why-its-test-scores-are-hard-believe/

I will say that the above article is not so smart, since even if the
Chinese provinces will not score the same in PISA,
you have to be careful and notice that China can still be a winner in
the global competition in for example science and technology etc. since
it has a lot of best big brains, since you can be convinced about it by
look at USA that has almost the same problem but is still being a winner
by doing the following, read my following thoughts so that to understand
how USA is being still a winner:

I have just talked about the way to success, and read the following
about the best big brains from around the world in USA so that to
understand more about the way of success:

Let's look for example at USA, so read the following from Jonathan Wai
that is a Ph.D., it says:

"Heiner Rindermann and James Thompson uncovered that the “smart
fraction” of a country is quite influential in impacting the performance
of that country, for example, its GDP."

And it also says the following:

"“According to recent population estimates, there are about eight
Chinese and Indians for every American in the top 1 percent in brains.”
But consider that the U.S. benefits from the smart fractions of every
other country in the world because it continues to serve as a magnet for
brainpower, something that is not even factored into these rankings.

What these rankings clearly show is America is likely still in the lead
in terms of brainpower. And this is despite the fact federal funding for
educating our smart fraction is currently zero. Everyone seems worried
Americans are falling behind, but this is because everyone is focusing
on average and below average people. Maybe it’s time we started taking a
closer look at the smartest people of our own country."

Read more here:

https://www.psychologytoday.com/us/blog/finding-the-next-einstein/201312/whats-the-smartest-country-in-the-world

So as you are noticing it's immigrants(and there are about eight Chinese
and Indians for every American in the top 1 percent in brains) that are
making USA a rich country.

And read also the following to understand more:

Why Silicon Valley Wouldn’t Work Without Immigrants

There are many theories for why immigrants find so much success in tech.
Many American-born tech workers point out that there is no shortage of
American-born employees to fill the roles at many tech companies.
Researchers have found that more than enough students graduate from
American colleges to fill available tech jobs. Critics of the industry’s
friendliness toward immigrants say it comes down to money — that
technology companies take advantage of visa programs, like the H-1B
system, to get foreign workers at lower prices than they would pay
American-born ones.

But if that criticism rings true in some parts of the tech industry, it
misses the picture among Silicon Valley’s top companies. One common
misperception of Silicon Valley is that it operates like a factory; in
that view, tech companies can hire just about anyone from anywhere in
the world to fill a particular role.

But today’s most ambitious tech companies are not like factories.
They’re more like athletic teams. They’re looking for the LeBrons and
Bradys — the best people in the world to come up with some brand-new,
never-before-seen widget, to completely reimagine what widgets should do
in the first place.

“It’s not about adding tens or hundreds of thousands of people into
manufacturing plants,” said Aaron Levie, the co-founder and chief
executive of the cloud-storage company Box. “It’s about the couple ideas
that are going to be invented that are going to change everything.”

Why do tech honchos believe that immigrants are better at coming up with
those inventions? It’s partly a numbers thing. As the tech venture
capitalist Paul Graham has pointed out, the United States has only 5
percent of the world’s population; it stands to reason that most of the
world’s best new ideas will be thought up by people who weren’t born here.

If you look at some of the most consequential ideas in tech, you find an
unusual number that were developed by immigrants. For instance, Google’s
entire advertising business — that is, the basis for the vast majority
of its revenues and profits, the engine that allows it to hire thousands
of people in the United States — was created by three immigrants: Salar
Kamangar and Omid Kordestani, who came to the United States from Iran,
and Eric Veach, from Canada.

But it’s not just a numbers thing. Another reason immigrants do so well
in tech is that people from outside bring new perspectives that lead to
new ideas.

Read more here:

https://www.nytimes.com/2017/02/08/technology/personaltech/why-silicon-valley-wouldnt-work-without-immigrants.html

Thank you,
Amine Moulay Ramdane.