Wednesday, July 29, 2020

Plan To Build a Quantum Internet

Report
U.S. officials and scientists unveiled a plan this week to pursue what they called one of the most important technological frontiers of the 21st century: building a quantum Internet. From a report:

Speaking in Chicago, one of the main hubs of the work, they set goals for forging what they called a second Internet -- one that would function alongside the globe's existing networks, using the laws of quantum mechanics to share information more securely and to connect a new generation of computers and sensors. Quantum technology seeks to harness the distinct properties of atoms, photons and electrons to build more powerful computers and other tools for processing information. A quantum Internet relies on photons exhibiting a quantum state known as entanglement, which allows them to share information over long distances without having a physical connection.

David Awschalom, a professor at the University of Chicago's Pritzker School of Molecular Engineering and senior scientist at Argonne National Laboratory, called the Internet project a pillar of the nation's quantum-research program. "It's the birth of a new technology. It's becoming a global competition. Every major country on earth has launched a quantum program ... because it is becoming clearer and clearer there will be big impacts," he said in an interview. The United States' top technology rival, China, is investing heavily in quantum technology, a field that could transform information processing and confer big economic and national security advantages to countries that dominate it. Europe is also hotly pursuing the research. The Energy Department and its 17 national labs will form the backbone of the project.
No, this is just foolishness. Nothing like this will ever have an impact.

Meanwhile, there has been progress toward post-quantum public-key crypto standards. This is likely to be used by government agencies with a mandate to keep secrets for 20 years. Only after 20 years, when everybody sees that there are no quantum computers, will it be apparent that the post-quantum crypto was all a waste.

Sunday, July 26, 2020

Bee credits Einstein for thought experiments

Dr. Bee writes:
Einstein’s greatest legacy is not General Relativity, it’s not the photoelectric effect, and it’s not slices of his brain. It’s a word: Gedankenexperiment – that’s German for “thought experiment”.

Today, thought experiments are common in theoretical physics.
As the comments point out, thought experiments have a long history of being used by Galileo, Newton, and every other famous theoretical physicist.
Einstein also liked to imagine how it would be to chase after photons, which was super-important for him to develop special relativity, and he spent a lot of time thinking about what it really means to measure time and distances.

But the maybe most influential of his thought experiments was one that he came up with to illustrate that quantum mechanics must be wrong.
No, Einstein did not develop special relativity, and did not show that quantum mechanics must be wrong.
A thought experiment that still gives headaches to theoretical physicists today is the black hole information loss paradox.
I don't think that this even qualifies as a thought experiment, as no part of it is testable.

So it is ridiculous to credit Einstein for the thought experiment.

But Einstein did popularize a style of thinking that has infected theoretical physics. It is the idea that physicists can do some abstract thinking about how the universe ought to be, write down some equations, and declare them to be physical laws. This thinking guided his own fruitless research into unified field theories, and modern work on strings. And work on multiverses and a lot of other ideas that are sillier than string theory.

Monday, July 20, 2020

Goedel did not destroy Math foundations

Natalie Wolchover writes in Quanta:
In 1931, the Austrian logician Kurt Gödel pulled off arguably one of the most stunning intellectual achievements in history.

Mathematicians of the era sought a solid foundation for mathematics: a set of basic mathematical facts, or axioms, that was both consistent — never leading to contradictions — and complete, serving as the building blocks of all mathematical truths.

But Gödel’s shocking incompleteness theorems, published when he was just 25, crushed that dream. He proved that any set of axioms you could posit as a possible foundation for math will inevitably be incomplete; there will always be true facts about numbers that cannot be proved by those axioms. He also showed that no candidate set of axioms can ever prove its own consistency.

His incompleteness theorems meant there can be no mathematical theory of everything, no unification of what’s provable and what’s true. What mathematicians can prove depends on their starting assumptions, not on any fundamental ground truth from which all answers spring.
Lubos Motl liked the essay.

This description of Goedel's theorems is common, but I doubt that Goedel would agree with it.

In spite of the above, ZFC set theory is a perfectly good foundation for mathematics. It is logical, consistent, and good enough to prove all the theorems in your favorite math textbooks.

Yes, ZFC is incomplete in the sense that you cannot use it to program a computer to answer any mathematical question. Life is not so simple.

This reminds me a little bit of Einstein's complaints that quantum mechanics is incomplete. Somehow the theory is good enough to explain the physics underlying about a trillions dollars worth of global production, but somehow it does not answer every question in the way that Einstein thought should be answered.

Supposedly Hilbert was the one who wanted an axiom system that was consistent and complete. I am not sure he did. He did say he wanted an axiom system that was demonstrably consistent, but I don't think he ever said that the consistency proof should be within the axiom system.

If he did, then he made a minor misstatement of what was possible. But the larger goal of axiomatizing mathematics has been very successful, and Hilbert and Goedel played roles in that.

All these articles saying Mathematics and Physics have faulty foundations are wrong.

Tuesday, July 14, 2020

Einstein heads list of historical frauds

Larry Romanoff writes:
One of the greatest mythical frauds in history is that of Albert Einstein, the famous physicist who invented the Theory of Relativity, E=mc² and so many other esoteric things. But this is all fabrication. The claims about Einstein inventing any theory of relativity, or light and photons, or time, are false. Almost every claim – almost everything – attributed to Einstein is simply a lie. Einstein was an inept who contributed nothing original to the field of quantum mechanics, nor any other science.
This is largely true, but exaggerated. Einstein did make some worthwhile contributions.

Henri Poincaré was the foremost expert on relativity in the late 19th century and the first person to formally present the theories, having published more than 30 books and over 500 papers on the topics. Extensive documentation exists that Einstein and his associates had studied Poincaré’s theories and mathematics for years, yet when Einstein published his almost wholly-plagiarised versions he made no reference whatever to these other works.
Mostly true. Lorentz and others also did work on relativity.

Einstein’s papers, theories, mathematics, documentation, were almost 100% plagiarised from others. He combined the prior published works of several people into one paper and claimed ownership of all of it.
His relativity papers are plagiarized in the sense that nearly all the original ideas were taken from others, and he did not give credit to his sources. And he continued to lie about it all of his life.

Perhaps the most damning evidence was when in 1953 Sir Edmund Whittaker published a very detailed account of the origin and development of all these theories and equations of physics, with extensive reference to the primary sources, documenting beyond doubt that Einstein had no priority in any of it, and clearly stating so. Einstein was alive and well when Whittaker published his book, yet he offered no dispute to the conclusions, no refutation of Whittaker’s claim that he (Einstein) had been irrelevant to the entire process. Einstein made no attempts in his own defense but simply hid in the bushes and refused to make any public comment whatever.[9]
This is true, and so it is old news that Einstein was not really the inventor of special relativity theory. This was all detailed in 1953, and Einstein was unable to refute any of it.

I thought that I was making a big discovery when I learned that Lorentz and Poincare had all of special relativity before Einstein, but Whittaker explained it all long ago. This is known to all the historians and everyone else who bothers to learn.

Einstein was almost certainly the greatest fraud and plagiarist in modern science, an unashamed intellectual thief but, according to sources like Wikipedia, this is all just a minor “priority dispute” about who said what first in the realm of relativity physics. These sources misleadingly imply that several people made a discovery independently and more or less simultaneously, and we are simply debating who went public first. Nothing could be farther from the truth.
This is an important point. There are a lot of priority disputes where great ideas are independently discovered. In the case of relativity, we have reason to think that FitzGerald and Lorentz independently discovered the contraction. But there is no reason to think that Einstein independently discovered any of it.

I think Einstein did discover the gravitational effect on time. But he got nearly everything else from others.

It is hard to tell what Einstein should be credited with, as you cannot trust Einstein's writings or historians.

The real question, to me, is why everyone goes to such extremes to credit Einstein. I do not have a good answer for that.

Friday, July 10, 2020

Paper retracted to avoid political pressure

Retraction Watch:
The authors of a controversial paper on race and police shootings say they are retracting the article, which became a flashpoint in the debate over killings by police, and now amid protests following the murder of George Floyd.

The 2019 article in the Proceedings of the National Academy of Sciences (PNAS), titled “Officer characteristics and racial disparities in fatal officer-involved shootings,” found “no evidence of anti-Black or anti-Hispanic disparities across shootings, and White officers are not more likely to shoot minority civilians than non-White officers.” It has been cited 14 times, according to Clarivate Analytics’ Web of Science, earning it a “hot paper” designation.

Joseph Cesario, a researcher at Michigan State University, told Retraction Watch that he and David Johnson, of the University of Maryland, College Park and a co-author, have submitted a request for retraction to PNAS. In the request, they write: ...

Although our data and statistical approach were valid to estimate the question we actually tested (the race of civilians fatally shot by police), given continued misuse of the article (e.g., MacDonald, 2020) we felt the right decision was to retract the article rather than publish further corrections.
The death of George Floyd is currupting academic research.

Apparently it is too sensitive to publish data on the race of civilians fatally shot by police.

If the data showed that police were killing Blacks disproportionately, then it would be fine. The supposed "continued misuse of the article" is just some academic argument about the significance of the findings.

No one is allowed to say that George Floyd died of an overdose, or that the police treat similarly situated perps the same. Everyone must say that there is a White supremacist plot to kill Blacks. The above authors are just tried to save their careers from the angry mobs.

Update: For an example of an anti-free-speech essay in the press, see this HuffPo essay.

Thursday, July 9, 2020

Another defense of Pinker

The NY Times reports:
Ever since the coronavirus emerged in Europe, Sweden has captured international attention by conducting an unorthodox, open-air experiment. It has allowed the world to examine what happens in a pandemic when a government allows life to carry on largely unhindered. ...

“They literally gained nothing,” said Jacob F. Kirkegaard, a senior fellow at the Peterson Institute for International Economics in Washington. “It’s a self-inflicted wound, and they have no economic gains.” ...

Sweden put stock in the sensibility of its people as it largely avoided imposing government prohibitions. The government allowed restaurants, gyms, shops, playgrounds and most schools to remain open.

Dr. Quantum Supremacy is politically triggered again:
If there were ever a time for liberals and progressives to put aside their internal squabbles, you’d think it was now. The President of the United States is a racist gangster, who might not leave if he loses the coming election—all the more reason to ensure he loses in a landslide. Due in part to that gangster’s breathtaking incompetence, 130,000 Americans are now dead, and the economy tanked, from a pandemic that the rest of the world has under much better control. The gangster’s latest “response” to the pandemic has been to disrupt the lives of thousands of foreign scientists—including several of my students—by threatening to cancel their visas. (American universities will, of course, do whatever they legally can to work around this act of pure spite.)

So how is the left responding to this historic moment?

This weekend, 536 people did so by … trying to cancel Steven Pinker, stripping him of “distinguished fellow” and “media expert” status (whatever those are) in the Linguistics Society of America for ideological reasons.
I don't agree with canceling Pinker either, but here is what Pres. Trump said at Mt. Rushmore:
Donald Trump: (09:17)
One of their political weapons is cancel culture, driving people from their jobs, shaming dissenters, and demanding total submission from anyone who disagrees. This is the very definition of totalitarianism, and it is completely alien to our culture and to our values and it has absolutely no place in the United States of America.

Donald Trump: (10:24)
This attack on our liberty, our magnificent liberty must be stopped and it will be stopped very quickly. We will expose this dangerous movement, protect our nation’s children from this radical assault, and preserve our beloved American way of life. In our schools, our newsrooms, even our corporate boardrooms, there is a new far-left fascism that demands absolute allegiance. If you do not speak its language, perform its rituals, recite its mantras, and follow its commandments, then you will be censored, banished, blacklisted, persecuted, and punished. It’s not going to happen to us.

Donald Trump: (11:25)
Make no mistake. This left-wing cultural revolution is designed to overthrow the American Revolution.
Today, the Left stands for canceling its enemies more than anything else.

I usually try to avoid politics on this blog, but today's Leftism is a threat to all academic science. Scott concedes:
The fundamental problem is that, as far as an outsider reading the news and social media can tell, the cancel culture that you and I both oppose has by now almost completely taken over “the Left,” just like Trumpism has almost completely taken over the Republican Party.
We have a two-party political system. You are either with Trump, or you are aligned with the modern witch-burners. I quote Aaronson and Pinker because they are two of the more honest Trump-haters, but they are inviting their own destruction. Unfortunately, most academics are much worse.

And what do they hate Trump for? The latest is that he wants the schools to reopen in the fall, and if the colleges refuse to let foreign students attend classes, then he sees no need to give them visas. These are completely reasonable centrist opinions.

Monday, June 29, 2020

Science papers now being memory-holed

More and more scientific papers are being retracted, usually for plagiarism or data fraud. Here is
one for ideological reasons:
That fear has come true with the removal of a paper by J. Phillippe Rushton and Donald Templer from the psychology journal Personality and Individual Differences. Rushton is known for his belief that cognitive ability varies not only between individuals but also between human populations. That was not, however, the subject of the removed paper. The subject was body coloration, specifically the fact that darker animals tend to be larger, more polygynous, and more aggressive. This correlation seems to hold true not only between species but also within species.
I am not sure what the ideology is here. Maybe writing about darker animals is now considered tasteless, in the light of the death of George Floyd?

There is more info here.

A lot is being done in the name of George Floyd, and now that includes the whitewashing of scientific papers. Even in Medieval Europe, where the Pope famously doubted heliocentrism, nobody removed scientific works from libraries.

If scientists want to contribute anything to the George Floyd, then I wish they would explain specifically how racism or police misconduct contributed anything to his death.

Scott Aaronson complains that the NY Times has caused a popular psychiatrist/rationalist blog to be taken down. The newspaper publishes anti-Trump garbage on a daily basis that is sourced to unnamed officials, but it intended to dox the blogger out of editorial policy.

One of Scott's readers says that he should not use terms like SJW and snowflake, because they are used by political enemies. A couple of others insist that there is no such thing as human races.

Obviously there are human races. Saying that race does not exist because a few people are hard to classify, is like saying there are no planets because of disagreements about how to classify Pluto.

People only deny race to pursue leftist politics, not for any scientific reason. So politics is causing scientific articles to be censored.

There has long been an effort to bring down the Slate Star Codex blog. The author is clearly left-of-center, and most of the comments are leftist. But leftists hate the site because it permits right-wing comments. The author tried to move some of those comments to Reddit, but that did not satisfy the leftists. It is amazing that the leftists got the NY Times to conspire in the effort to take down the blog.

If anything, Slate Star Codex promoted rationalism, where one can objectively examine the facts and come to reasonable conclusions. Sometimes those facts were uncomfortable for some people. For that, the blog was hated.

Those opposing the rationalists seem to belong to something called the Sneer Club.

Thursday, June 25, 2020

FQXI goes full Marxist

From FQXi, a Physics Institute:
The FQXi June 14, 2020 Podcast features:

Strike For Black Lives
Retrocausality Reviewed
Measuring Consciousness in Fruit Flies
Superior
Monster Galaxy
First it talks about systemic racism against Blacks. There are no actual example, or any data indicating that Blacks are mistreated.

Then a researcher pushes retrocausality. He complains that people are usually only concerned about how the past influences the future. He wants theories for how the future causes events in the past.

Then someone measures consciousness in fruit flies. It's easy -- just like qubits.

Then a review of an Indian woman with strange beliefs about people. She seems to think that the races and sexes are all the same, except that India is superior to everyone else. There is no actual science. Just a jumble of leftist talking points. Listening to her garbled nonsense just convinced me that she is incapable of scientific thinking.

I would think that these folks would have a more scientific outlook, and a smart scientist can still have goofy politics. But even their opinions about hard science is goofy! Studying retrocausality is about like studying Astrology.

Wednesday, June 24, 2020

LIGO discovers new object

The NY Times reports:
Astronomers announced today that they had discovered something new out in the dark: a stellar corpse too heavy to be a neutron star — the remnant of a supernova explosion — but not heavy enough to be a black hole.

Whatever it once was, it is long gone. About 780 million years ago — and 780 light-years away — it was eaten by a black hole 23 times more massive than the sun. That feast left behind an even heavier black hole — a vast, hungry nothing with the mass of 25 suns.

News of that event only recently reached Earth, in the form of space-time ripples known as gravitational waves. These evanescent vibrations were felt on Aug. 14, 2019, by an array of antennas in Italy and the United States called the International LIGO-Virgo Collaboration, and the results were published on Tuesday in Astrophysical Journal Letters.
Maybe this will be corrected by the time you read this, but if we are just seeing something from 789 million years ago, then it must be 780 million light-years away.

Gravitational waves travel at the speed of light. The universe has expanded in that time, so the distance then is smaller than the distance today, and so referring to distance is a little imprecise. Still, it is rate to see the NY Times off by a factor a million, on a matter than does not involve Pres. Trump.

Update: The NY Times corrected the article without comment.

Monday, June 22, 2020

Another use of Bell to attack locality

Eddy Keming Chen writes in a new paper:
Bell's theorem is most significant because its conclusion is so striking and its assumptions so innocuous that it requires us to radically change how we think about the world (and not just about quantum theory).

Before Bell's theorem, the picture we have about the world is like this: physical things interact only locally in space. For example, a bomb dropped on the surface of Mars will produce immediate physical effects (chemical reactions, turbulences, and radiations) in the immediate surroundings; the event will have (much milder) physical effects on Earth only at a later time, via certain intermediate transmission between Mars and the Earth. More generally, we expect the world to work in a local way that events arbitrarily far apart in space cannot instantaneously influence one another. This picture is baked into classical theories of physics such as Maxwellian electrodynamics and (apparently) in relativistic spacetime theories. After Bell's theorem, that picture is untenable. Bell proves that Nature is nonlocal if certain predictions of quantum mechanics are correct.
He then goes on to argue that the nonlocality conclusion can only be avoided by either accepting superdeterminism or rejecting probability theory.

He doesn't even mention that Bell only showed that a classical theory of hidden variables would have to be nonlocal. His theorem says nothing about non-classical theories.

He also doesn't mention that merely rejecting counterfactual definiteness resolves the problem.

I don't know if these authors are misguided or dishonest. They can believe in action-at-a-distance if they want, but if they claim to survey the opposing views and leave out the mainstream explanation, then they are not telling the truth.

Friday, June 19, 2020

Ellis explains downward causality

Physicist George Ellis wrote a very good relativity textbook with S. Hawking, and now writes in Aeon:
Physics has made huge strides since the days of Laplace; indeed, it would be completely unrecognisable to him. Yet there are still physicists today who confidently proclaim that we can’t have free will because physics determines everything, including brain functioning – entirely ignoring the complex context and the power of constraints.

If you seriously believe that fundamental forces leave no space for free will, then it’s impossible for us to genuinely make choices as moral beings. We wouldn’t be accountable in any meaningful way for our reactions to global climate change, child trafficking or viral pandemics. The underlying physics would in reality be governing our behaviour, and responsibility wouldn’t enter into the picture.

That’s a devastating conclusion. We can be grateful it’s not true.
For a biologist with such a disbelief in free will, see Jerry Coyne.

Ellis doesn't deny the Schroedinger equation or any law of physics. What he does deny is that any of those laws give the sort of deterministic predictability that would eliminate free will. I think that he is correct about that.

Not everyone agrees. Einstein was a determinist who denied free will. Sean M. Carroll is a determinist, but he also believes in many-worlds theory.

Wednesday, June 17, 2020

China puts quantum keys in space

The NY Times reports:
China Reports Progress in Ultra-Secure Satellite Transmission

Researchers enlisted quantum physics to send a “secret key” for encrypting and decrypting messages between two stations 700 miles apart.

The world of artificial satellites, silent in the void of space, might seem pacific. In fact it’s a high-flying battlefield rife with jamming, snooping, blinding, spoofing, hacking and hostility among the planet’s growing array of spacecraft and space powers. Now, Chinese scientists report new progress in building what appears to be the first unbreakable information link between an orbiting craft and its terrestrial controllers, raising the odds that Beijing may one day possess a super-secure global communications network.

In the journal Nature on Monday, the team of 24 scientists describe successfully testing the transmission of a “secret key” for encrypting and decrypting messages between a satellite and two ground stations located roughly 700 miles apart.

The method enlists quantum entanglement, an idea of modern physics that seems ridiculously at odds with common sense. It posits that a pair of widely separated subatomic particles can still seem instantaneously linked: Measuring a property of one will simultaneously affect the measured results on its companion, even if the two are millions of light-years apart. Albert Einstein called quantum entanglement “spooky action at a distance.”
This is absurd. We already have super-secure communications is space. It is done using end-to-end encryption. It doesn't matter if an adversary listens in, because the messages are computationally indistinguishable from random bits.

What the Chinese quantum physics supposedly accomplishes is that there is a probability that an eavesdropper could be detected, so that the communication link could be shut down.

However, if the cryptography is done right, then there is no need to worry about eavesdroppers or to shut down the link.
In a research summary, Nature said the team had demonstrated that the system “produces a secure channel that is resistant to attacks.”
But not as resistant as conventional end-to-end cryptography.
NASA has drawn up plans to rival the Chinese advance. Known as the National Space Quantum Laboratory program, it intends to use a laser system on the International Space Station to relay quantum information between two ground stations. The program was initiated in 2018.

Generally, Dr. Earl said, Beijing seems far ahead of Washington in the race to master the quantum riddles and their practical applications in space.
That is how you get funding in Washington. Claim that we have a Doomsday Gap.

Monday, June 15, 2020

What great scientist will be purged next?

Noah Carl writes in RT.com:
The Western world appears to be in the midst of a “woke” Cultural Revolution. Historical monuments are being toppled, popular authors are being denounced for saying “sex is real,” and corporations are rushing to pledge fealty.

A question that naturally arises at the beginning of any such period of upheaval is, “Who will survive the purge, and who won’t?” I fear that even Charles Darwin might not be safe. ...

Will Darwin survive the purge? ...

First, differences between the sexes. In The Descent of Man, Darwin states that “the average of mental power in man must be above that of woman.” ...

Second, differences between the races. ...

Third, eugenics. ...

In summary, Darwin believed that men were on average more intelligent than women, and that some races were “civilised” whereas others were “savage.” His views on eugenics are not entirely clear (the term was coined one year after Darwin died), but it is obvious from his remarks in The Descent of Man that he believed industrial society could have dysgenic effects.

Sunday, June 14, 2020

More academic bloggers go nuts

Dr. Bee writes:
We should keep in mind that quite plausibly the reason we have not yet found evidence for extraterrestrial intelligent life is that we have not developed the right technology to pick up their communication. In particular, if there is any way to send information faster than the speed of light, then that’s what all the aliens are using.
I once heard a physicist argue that an advanced space alien civilization would use neutrinos to communicate, but this is even wackier.

Dr. Quantum Computing rants:
When the Nazis invaded the Soviet Union in 1941, it suddenly became reasonable to take the side of the bloodthirsty Stalin. And it would’ve been praiseworthy for a Russian to say: “I now pledge my life to fighting for the Soviet government — even if, likely as not, that government will thank me afterward by sending me to the gulag for an invented crime.”

Five years ago, thousands of woke activists shamed me for writing about my teenage experiences on this blog, a few even calling for an end to my career. Especially if those activists emerge victorious from a turbulent 2020 — as I hope they will — I expect that they’ll come for me again. (Well, if they get around to it. I’m nowhere near the top of their list.)

And yet, if Lawrence Douglas’s scenario comes to pass — if, for example, the 2020 election leaves Trump barricaded in the White House with his loyalists, while a duly elected government waits in limbo — then I pledge to render whatever assistance I can, and even risk my life if needed, for the same side that the woke activists will be on.
It is hard to imagine anyone but a nerdy Jewish academic saying anything so ridiculous.

I have often wondered how professors could be Marxists, since they would not be safe if the Marxists got power.

Donald Trump, more than any other politician, stands against those activists who sought to destroy Scott. And yet Scott does not see that. Somehow Jewish Leftism is baked into his DNA, and he will side with his persecutors.

Update: It is bizarre to complain that Pres. Trump might not accept the fairness of the 2020 election. The Democrat Party has spent almost 4 years complaining about the fairness of the 2016 election. They keep complaining about crazy Russian conspiracy theories, they used bogus warrants to spy on his campaign, they pushed the $50M Muller investigation that found nothing, and they tried for a ridiculously partisan impeachment with secret hearings and no direct evidence.

It appears that ever professor I have quoted has some irrational hatred of Pres. Trump. Obviously their hatreds run much deeper than just one man. They are like Stalinists on a mission to destroy all that is good. Just read what they say, and see if you can find any other explanation.

Saturday, June 13, 2020

Leftism has corrupted academia

A computational biology professor writes:
Today, June 10th 2020, black academic scientists are holding a strike in solidarity with Black Lives Matter protests. I strike with them and for them. This is why:
He goes on to described being shocked at rough treatment being given to Black criminals resisting arrest. He describes himself as a White South African Jew who grew up attending elite White schools, and then, just as apartheid laws were being repealed, moved to Palo Alto California! It turned out to be controlled by rich Jews who kept the Blacks out of town.

He got his degrees from CalTech and MIT, and is now a professor at CalTech.

His post is long and tedious, but notably missing is any example of any Black scientist or student or academic being mistreated. Just criminals resisting arrest.

But it is all political anyway, and Pres. Trump gets the blame.

This ivory tower leftist professors really disgust me. They are fueling race riots for their own political purposes. If he really wanted to teach Black students, he could move to a Black college.

Another Jewish leftist biology professor posted a much more sensible opinion:
No, academia and STEM (STEM is the only aspect of academia I know well) do not sustain racist systems, nor do they contribute to the murder of black people. Science, in fact, is about as egalitarian a discipline as you can imagine, and science departments throughout America are fervently trying to increase diversity, attempting to hire black and Hispanic faculty and to recruit students of color. ...

They see #ShutDownSTEM” as “a demonstration of power” rather than as “an honest confusion about whether science is a good thing.”
That's right. It is just a leftist demonstration of power, and professors who go along with it are evil.