Sabine Hossenfelder on consciousness and the collapse of the wave function

November 20, 2022 • 12:10 pm

In the video below, physicist Sabine Hossenfelder deals with the deeply weird nature of quantum mechanics—in this case, can human consciousness cause collapse of the wave function? This is connected with famous experiments like the “double slit experiment” or the Gedankenexperiment of Schrödinger’s cat—scenarios where the apparent outcome of a study depends on whether someone is looking at it and measuring the outcomes. For example, if you let photons from a single source go through two slits in a plate, and don’t observe which slit they go through, they form an interference pattern on a screen on the other side, implying that light is a wave, and is going through both slits at once. But if you put a detector at each slit, observing which one each photon goes through, you now get a mirror of the two-slit pattern on the screen: the photons go through one slit and not both. The results, then,  differ depending on whether you’re looking and measuring. As Wikipedia notes:

The double-slit experiment (and its variations) has become a classic for its clarity in expressing the central puzzles of quantum mechanics. Because it demonstrates the fundamental limitation of the ability of the observer to predict experimental results, Richard Feynman called it “a phenomenon which is impossible […] to explain in any classical way, and which has in it the heart of quantum mechanics. In reality, it contains the only mystery [of quantum mechanics].

This kind of result has deeply troubled physicists for years, for it implies that our own brains somehow influence quantum physics and the behavior of particles. How can that be? As Sabine says, if consciousness can do that, it must have physical effects on reality, which doesn’t seem tenable. (The idea also leads to all kinds of quantum hokum à la Deepakity.) And would the consciousness of a worm suffice? How can the nature of reality depend on whether someone is looking at it? Well, there are many solutions proposed, including the many-worlds hypothesis, but I’ll let you read the book at the bottom to get the full story.

This all derives from a persisting dichotomy in quantum mechanics: is it telling us something about what is real, or only giving us a mathematical analysis that, while it works, doesn’t give us the ability to visualize what’s really going on on the particle level?  Bohr and his famous “Copenhagen interpretation” of QM espoused the latter: the “shut up and calculate” version. Einstein and others believed that there is a fundamental reality to nature that must be graspable by our brains, and is only approximated by quantum mechanics.  Or so I interpret.

At any rate, I found Sabine’s discussion somewhat confusing, mainly because you have to know a bit about quantum mechanics and its history before you can understand her presentation. I did, however, like her dismissal at the end of the video of the Penrose/Hamaroff idea that consciousness doesn’t cause the collapse of the wave function, but rather the opposite: the collapse of the wave function, working on “microtubules”in the brain, is itself responsible for consciousness.  Right now there’s no evidence for this, or for the panpsychism that Hossenfelder also dismisses.

 

I just finished this book, which is really all about the observer effect and whether quantum mechanics tells us something about what is real in the world. It’s not too hard going, and is a fascinating story going from Heisenberg up to modern disputes about the many-worlds hypothesis. And it’s heavily historical, showing how the charisma and intelligence of Neils Bohr all but shut down the debate for many decades. Of all the books on quantum mechanics that I’ve read, this is the clearest, and the one that best describes the disputes over what QM means. I recommend it highly. Click on the screenshot to go to the Amazon site.

(h/t Steve)

The Fine Tuning argument for God: a selection of refutations (and a few supporters)

November 19, 2022 • 12:45 pm

Most of you surely know the fine-tuning argument for God: the claim that the physical constants of the Universe are such as to permit the evolution and existence of life (especially H. sapiens), and the concatention of so many salubrious constants is improbable—too coincidental to reflect anything but a Great Designer. (Its proponents claim that any alteration in these constants would make life impossible.)

This hourlong video interviews proponents and opponents of this argument for God (mostly opponents). They include philosophers, physicists, and believers. Here’s a list. Anybody whose name you recognize in the list below, save perhaps (Lennox and Craig) isn’t convinced by the argument.

Sir Roger Penrose
Sean Carroll
Alan Guth
Carlo Rovelli
Hans Halvorson
Justin Something
Chris Hitchcock
Barry Loewer
Graham Priest
Daniel Linford
Tim Maudlin
Simon Saunders
Niayesh Afshordi
Alex Malpass
Kenneth Williford
William Lane Craig
John Lennox
Abhay Ashketar
Lee Smolin
Stav Zalel
Rafael Sorkin

Nearly all the people interviewed reject the argument, largely on the grounds that we simply cannot calculate a priori what the probabilities are of the constants of nature being what they are, and there are alternative explanations for life that are purely naturalistic.

Sean Carroll makes the point that even thinking that there is fine-tuning that allows for the existence of life, that presupposes naturalism, because “God does not need the laws of physics to allow certain physical configurations to exist in order for there to be life. God is infinitely powerful; God can do whatever. The only theory under which the physical conditions need to be exactly right to allow for complex chemical reactions and biology and life and so forth, is naturalism.” I’m not quite sure about that argument, however; how do we know that God’s creation could occur unless the laws of physics were what they are? Could God really create humans in a universe with different physical constants, constants that He determines?

I do recommend watching the video; it gives you plenty of ammunition against those who wield the argument, but examines the argument from various sides, including what theological assumptions go into it. (The problem of evil is offered as a defeater for a God who would create a universe containing humans.) The arguments go further into string theory, multiverses, the cosmological constant, Boltzmann brains, and Lee Smolin’s “cosmological selection” argument for fine-tuning.

In the end, you will likely reject the fine-tuning argument (even the moderator says that there’s no justification for accepting God from this argument), but you’ll also be impressed about how much we still don’t understand about cosmology.

Three awarded Nobel Prize in Physics (and a contest)

October 4, 2022 • 8:00 am

Three physicists working independently, from France, the U.S., and Austria, have nabbed this year’s Nobel Prize in Physics for work on quantum entanglement. (Note the international character of the awardees.) All three share equally in the prize, a total of ten million Swedish kroner (about $1.3 million US. It’s not a munificent amount, but the value to one’s career an esteem in inestimable. The winners will henceforth always be designated as “Nobel Laureate [name here].”

What did they win for? Well, you can read about it at either the Nobel press-release site (below) or the NYT article below that; click on either to read. Trigger warning: quantum physics! The award has to do with quantum entanglement, a phenomenon that I can barely understand but that Einstein dismissed as “spooky action at a distance.” Beyond that, even the physicists who wrote me about this don’t fully understand the accomplishment that was honored, for which entanglement is just the starting point.

From the NYT:

A summary from the NYT with a good explanation of entanglement (I’ve put it in bold below):

The Nobel Prize in Physics was awarded to Alain Aspect, John F. Clauser and Anton Zeilinger on Tuesday for work that has “laid the foundation for a new era of quantum technology,” the Nobel Committee for Physics said.

The scientists have each conducted “groundbreaking experiments using entangled quantum states, where two particles behave like a single unit even when they are separated,” the committee said in a briefing. Their results, it said, cleared the way for “new technology based upon quantum information.”

The laureates’ research builds on the work of John Stewart Bell, a physicist who strove in the 1960s to understand whether particles, having flown too far apart for there to be normal communication between them, can still function in concert, also known as quantum entanglement.

According to quantum mechanics, particles can exist simultaneously in two or more places. They do not take on formal properties until they are measured or observed in some way. By taking measurements of one particle, like its position or “spin,” a change is observed in its partner, no matter how far away it has traveled from its pair.

Working independently, the three laureates did experiments that helped clarify a fundamental claim about quantum entanglement, which concerns the behavior of tiny particles, like electrons, that interacted in the past and then moved apart.

And the accomplishments of the three, also from the NYT:

Dr. Clauser, an American, was the first in 1972. Using duct tape and spare parts at Lawrence Berkeley National Laboratory in Berkeley, Calif., he endeavored to measure quantum entanglement by firing thousands of photons in opposite directions to investigate a property known as polarization. When he measured the polarizations of photon pairs, they showed a correlation, proving that a principle called Bell’s inequality had been violated and that the photon pairs were entangled, or acting in concert.

Clauser looks as if he won it for demonstrating the phenomenon of entanglement fifty years ago, but, according to Wikipedia, entanglement of photons was experimentally demonstrated in the year I was born.

The first experiment that verified Einstein’s spooky action at a distance or entanglement was successfully corroborated in a lab by Chien-Shiung Wu and a colleague named I. Shaknov in 1949, and was published on new year’s day in 1950. The result specifically proved the quantum correlations of a pair of photons.

Wu won the Nobel Prize for that, but what was entangled was “parity,” not “polarization” (several aspect of photons’ properties are entangled). But Wu and her colleague’s experiments seem to have demonstrated the violation of Bell’s inequality in 1949.

More from the NYT:

The research was taken up 10 years later by Dr. Aspect, a French scientist, and his team at the University of Paris. And in 1998, Dr. Zeilinger, an Austrian physicist, led another experiment that considered entanglement among three or more particles.

Eva Olsson, a member of the Nobel Committee for Physics, noted that quantum information science had broad implications in areas like secure information transfer and quantum computing.

Quantum information science is a “vibrant and rapidly developing field,” she said. “Its predictions have opened doors to another world, and it has also shaken the very foundation of how we interpret measurements.

The Nobel committee said the three scientists were being honored for their experiments with entangled photons, establishing the violation of Bell inequalities and pioneering quantum information science.

“Being able to manipulate and manage quantum states and all their layers of properties gives us access to tools with unexpected potential,” the committee said in a statement on Twitter.

Two physics mavens who wrote me about this admitted they didn’t fully grasp what the Laureates had shown.

One said this:

Hell. I don’t even understand the title of the physics area of this year’s award. My days are over!

And the other said this:

Whoooosh … right over my head !  I have absolutely no idea what they are talking about!

Readers are welcome to clarify.  But it’s quantum mechanics, Jake, and if you think you understand its physical interpretation, as Feynman said, you don’t. That’s what’s so fascinating about the area. The math seems to absolutely predict what you see, but to translate the mathematical results into language that corresponds to our everyday experience is nearly impossible.

Here’s the one-hour live announcement:

And our contest, based on the failure of readers to guess who would win all the Prizes in a given year. I’m thus restricting the contest to one prize only. To wit:

The Nobel Prize in Literature will be awarded early Thursday morning (US time). Who will win it?

The first person who guesses the correct answer and puts it below in a post gets an autographed copy of either WEIT or Faith versus Fact, personalized to their liking and with a cat or other animal of their choosing drawn in it by me, PCC(E).

Put your choices below. The contest closes at 8 pm Eastern US time on Wednesday (tomorrow).

The DART mission: A U.S. spacecraft will hit an asteroid this evening (7:14 EDT), trying to change its orbit

September 26, 2022 • 8:00 am

Note: because I have several items to bring to your attention, the “readers’ wildlife post” will be suspended for today, but will resume tomorrow.

Today—to be precise, at 7:14 p.m. EDT (6:15 Chicago time)—is the day that the DART mission (Double Asteroid Redirection Test) culminates in a NASA spacecraft, launched last November, crashing into a small asteroid in orbit around a longer one. The goal, as my friend Jim Batterson writes below, is to see if humans even have the ability to deflect an asteroid, comet, or any smallish body heading for a collision course with Earth. (This asteroid isn’t on a collision course; this is just a test.) If you want to see the upshot, I recommend going online at least fifteen minutes at the time given above. (Actually, you should be able to see a small image of the asteroids an hour before the crash.) The the news of the mission’s success or failure will take about 45 seconds to reach the earth, as the signal must travel 7 million miles at the speed of light.  The link you want to watch is at the bottom as an embedded YouTube video.

I am absolutely amazed that we can even try to do this, especially because the collision is guided automatically rather than manually (see below) and was calculated precisely using Newtonian physics. And note the asymmetry of the collision: as the Associated Press reported:

“This really is about asteroid deflection, not disruption,” said Nancy Chabot, a planetary scientist and mission team leader at Johns Hopkins University’s Applied Physics Laboratory, which is managing the effort. “This isn’t going to blow up the asteroid. It isn’t going to put it into lots of pieces.” Rather, the impact will dig out a crater tens of yards (meters) in size and hurl some 2 million pounds (1 million kilograms) of rocks and dirt into space.

The size of a small vending machine at 1,260 pounds (570 kilograms), the spacecraft will slam into roughly 11 billion pounds (5 billion kilograms) of asteroid. “Sometimes we describe it as running a golf cart into a Great Pyramid,” said Chabot.

Jim “Bat” Batterson is an old college friend who worked for NASA for many years and has kept me informed about the DART mission. He kindly offered to summarize the mission for me, and the indented bit below is what he wrote. Thanks, Bat!

Asteroid Impact Test Mission September 26, 2022 (Impact at 7:14 PM)

Jim Batterson

The DART (Double Asteroid Redirection Test) is scheduled to be completed today, September 26, 2022, at 7:14 PM EDT. DART is an international space mission led by NASA and the Johns Hopkins Applied Physics Laboratory. Its mission is carry out the first in situ test of the theory that an asteroid on a collision course with the Earth can be deflected by the momentum of an impacting spacecraft into a new trajectory that will miss Earth.

This test involves spacecraft hitting a near-Earth asteroid that is NOT on a collision path with Earth. The impacting spacecraft has been journeying toward the double asteroid system, Didymos and its moonlet Dimorphos, since its November 2021 launch from Vandenberg AFB in California.  The target, Dimorphus, the smaller of the two asteroids, is about 500 feet across. The impact will occur approximately 7 million miles from Earth, so pictures and data should be available in near real-time.  A smaller companion spacecraft is programmed to miss the asteroid and and to try to photograph the impact.

The path over the past 10 months to a rendezvous millions of miles from Earth has involved yet another extraordinary engineering effort to guide a spacecraft through the perturbing effects of gravity from planets and the varying solar wind in the otherwise benign vacuum of space.

NASA has been following Near-Earth Objects in space for many years to prepare for any genuine predicted impact and to ensure that humans in space are not threatened by these objects.  Part of the NASA research program has also included determining whether redirecting a certain size-class of objects that might be on an Earth-intersecting trajectory—and which could cause catastrophic harm if they were to impact Earth—by hitting the object with a spacecraft while the object is still far away from Earth. The large distance allows a small change in trajectory of the target to result in missing Earth by a wide shot.

While mathematical models and simulations have been very encouraging over the years, DART is the first actual in situ physical test of the theory.  The theory is just simple Newtonian mechanics—much like the strategy of billiards in which a ball is hit into another ball and both balls change speed and direction.  But in the DART experiment, one ball, the asteroid, is 8 million times more massive than the other. This is much like trying to change the trajectory of a bowling ball by impacting it with a grain of sand.  Because the amount of change in direction depends on not just the masses, but rather on the momentum (the product of mass times velocity), the smaller object (the spacecraft) must be moving very fast to impart any significant momentum to the asteroid.  That will be the case tonight as the refrigerator size, 1000 lb. craft will crash into the asteroid at ~15,000 MPH!

The last human input guiding the spacecraft will occur about four hours before scheduled impact. That’s when when the image of the asteroid gets centered in the field of the craft’s onboard digital camera by ground controllers using hydrazine thrusters for orientation.  Because the craft is closing in on the asteroid at about 4 miles per second, and it takes the better part of a minute for a round trip of a radio signal between Earth and the spacecraft, from that point on the DART craft maneuvers totally autonomously using its hydrazine thrusters to keep the target image centered in the camera’s field of view..  We should see pictures taken from that camera during descent as well from a companion spacecraft designed photograph the impact and any post-impact disturbances at and above the surface of the asteroid.

I don’t know if these raw data images will be made available to the public in near real time or only after some image processing.  Any resulting momentum change will be detected by a change in orbit characteristics for the twin asteroid system as calculated from Earth-based observations.

The latest information I have (as of September 25) is that impact should occur at 7:14 PM EDT on Monday, September 26.  The mission is scheduled to be covered live on NASA TV starting at 6:00 PM EDT.  Go to NASA TV at https://www.nasa.gov/nasalive, or just click below [JAC: check the news in case there is any change in time, though I don’t expect one.]

WATCH HERE:

 

You can see pretty complete background information  at scitech.

Finally, Jim wanted me to give this caveat about what he said, and adds that he welcomes any corrections:

 I think this is pretty close to being correct, but I was more of an airplane/spaceplane guy – not an orbital or outer-space guy. So You might add the caveat that this is from my study of publicly available mission documents, back of the envelope calculations, and general accumulated knowledge of NASA missions in general from a thirty-year career that ended in 2008.  Without peer review I cannot attest to total accuracy, but as you say: I try my best.

JAC: some pictures from the BBC:

The spacecraft zeroes in:

(From NASA):

The relative sizes of the target and projectile:

The expected perturbation of Dimorphos’s orbit. Note the accompanying LICA Cube that will photograph the impact (if it occurs). If there’s no impact, there will be a second chance later as the DART craft returns. The AP notes that “Little Dimorphos completes a lap around big Didymos every 11 hours and 55 minutes. The impact by Dart should shave about 10 minutes off that.”

Here’s a four-minute video about the mission and how scientists will watch the impact and measure its effect:

Finally, a short AP film that starts with November’s launch:

Sabine Hossenfelder disses the multiverse

September 11, 2022 • 10:30 am

In this 17-minute video, physicist and science popularizer Sabine Hossenfelder discusses the concept of the multiverse, one that’s popular with many physicists (and laypeople)—but one, she says, for which there’s no evidence. (It’s also a topic of her latest book; see an excerpt here and get a link to the book below)

Reader Steve sent me the video link with the note (reproduced below with permission), referring to Sean Carroll, who’s an advocate of the multiverse.

The latest from our friend, Sabine. As much as I like and admire Sean Carroll, I am convinced by Sabine’s argument…for now.

I’m putting her new book on my reading list.

The video is pretty clear, so I’ll just give the take-home message briefly.

To Hossenfelder, the problem with mulitverse theories is that they all “Postulate the existence of unobservable entities”.  That is, although the multiverse is an outcome of some mathematical physics, there is no way physicists have found to test it—to make observations that would make its existence more or less likely.  If it ultimately can’t be tested, she says—and I agree—then it can’t be considered a scientific theory. (This is also true of string theory.)  Now we don’t know if somebody in the future will come up with a clever way to see that the universe keeps splitting into more and more universes every time something happens, but until they do, to quote Laplace, “we have no need of that hypothesis.” I’m glad, however, if some physicists are working on a way to test it. However, Hossenfelder says that there is no observation even in principle, that physicists can make to test the existence of the multiverse. That may change. And of course a failure to find ways to detect multiverses does not mean that they do not exist, of course. Like the idea of an unobservable God, we simply can have no confidence in their existence.

Hossenfelder then considers whether the multiverse theory is science, religion, or pseudoscience. She’s already dismissed science, but argues that the theory either pseudoscience or religion, depending on how you use it. One quote:

“If you assume that unobservable universes exist, and write papers about them, then that’s pseudoscience. Because this is exactly what we mean by “pseudoscience”—pretends to be science, but isn’t. If you accept that science doesn’t say anything about the existence of those universes, one way or another, and you just decide to believe in them, then that’s religion. Either way, multiverses are not science—they’re like Tinker Bell, basically: they exist if you believe in them. 

Hossenfelder thinks that the fundamental error that physicists have made is thinking that multiverses exist because they’re an outcome of mathematical physics.  In other words, “The big problem with the multiverse idea is that physicists are confusing mathematics for reality.”

Finally, she takes on four objections to her own view, but dispels all of them.

Adjudicating this argument is above my pay grade, but I do know that no physicist has found a way to test the predictions of multiverse theory. It’s still a theory widely discussed (Sean Carroll talks about it quite often, and I believe it’s discussed with approbation in his 2017 book The Big Picture). But if scientists, after arduous effort, eventually can’t see a way to find evidence to test it, it will eventually disappear as a matter for serious discourse in physics.

Hossenfelder is an excellent presenter of physics, and passionate about her views. The only flaw in her presentation is that she seems a bit nervous—or perhaps she’s just being very serious and passionate.  A more relaxed presentation would be a better one, but not a lot better.

I also like her because, as I discussed exactly two years ago, she’s a hard determinist with respect to free will. She doesn’t seem to be a compatibilist, either, though she does agree with some compatibilists in thinking we shouldn’t worry about our lack of libertarian free will.  But I don’t think she’s dug deeply enough into the consequences of rejecting “naturalism” (my new word for “determinism”. There are serious social implications, notably in the judicial sphere, to rejecting libertarian free will. Below the fold you can see some of what I wrote about her video on free will.

Wouldn’t it be lovely to see a debate between Hossenfelder and Sean Carroll (who’s a bit of a compatibilist) on the multiverse, on free will, or both?  In such a debate both sides would be smart, rational, quick, and, of course, polite. It would be a delight to watch.

Enough—watch this:

Here’s Sabine’s new book (click on the screenshot to go to the Amazon site), and you can get a peek inside at that site:

Click on “continue reading” to see some of my discussion of Hossenfelder’s take on free will.

Continue reading “Sabine Hossenfelder disses the multiverse”

Another STEM field, particle physics, gets woke

September 5, 2022 • 11:30 am

A long time ago, I predicted that among all academic disciplines, science would be the least likely to become woke. I was wrong. These disciplines, I thought, are wedded to facts and to open discussion as well, so surely they could not all rush to conclusions that were unevidenced.  Yes, I was wrong, but I won’t discuss the reasons why I erred. The fact is that as soon as one department or scientific journal drank the Kool-Aid, the others rushed to the trough to imbibe along with them. The result is that nearly all scientific societies and journals (Nature and Science prominent among them), as well as many STEM departments in universities, are rushing to proclaim their virtue, while in the end doing very little to ensure equality of opportunity for Americans.

I of course favor equality of opportunity: a long and arduous project that involves putting effort and money into housing, education, and every aspect of culture that, inherited from the bigotry of the past, holds down minorities. It’s certainly true that the underachievement of “minoritized” groups in the sciences is largely a relic of discrimination—a relic that society (though not necessarily particle physics) has a responsibility to attack. But the woke people in STEM aren’t trying to rectify this by “widening the pipeline.” Instead, they use this kind of logic:

a.) There are “inequities” in science: disproportionally low numbers of individuals from some minority groups in fields like physics and chemistry.

b.) These inequities are evidence for current and ongoing “structural racism” in science.

c.) Therefore, we must root out the present racism endemic in scientific fields.

We all know by now the fallacy of this argument. Inequities now are largely the result of racism in the past, whose legacy remains with us. But to say that current inequities reflect current racism is fallacious (especially for scientists) because, for cultural and historical reasons, the obstacles to entry into scientific fields is simply lower for “privileged” groups—and the desire to do pure science may differ as well. As anybody in the sciences knows, the inequities persist despite years of attempts of schools and fields to recruit minorities. Of course some scientists are racists—every field has its bigots. Science is not 100% purified of bigotry. But to say that such bigotry is currently endemic, rife, and ubiquitous in science is to completely ignore all the efforts scientists have made to recruit minorities.

The equation of inequities with ongoing structural racism is a fallacy that one wouldn’t expect among evidence-adhering scientists, especially in view of the countervailing evidence, but it’s the kind of claim that’s simply taboo to question.  But what else are we to do to ensure equality unless we know the causes of inequality?

The new article from Nature below (click on screenshot) makes the familiar argument that a field of science—in this case particle physics—is structurally racist, and that’s why there are fewer doctorates going to women (22%) and underrepresented minorities (7%) than their proportion in the population. To the interviewee, Kétévi Assamagan, this constitutes evidence that the field is not only rife with discrimination, but is also not a meritocracy, for to Assamagan a true meritocracy would have more women and minorities than it does.  This claim again requires evidence, but none is given.

The article shows the characteristics of all such articles accusing scientific fields of being hotbeds of racism: not only the equation of inequities with ongoing racism, but the obvious omission of supporting data. Rarely do we see evidence of racism at all beyond assertions, and we never see evidence for systemic racism (or, for that matter, for “implicit bias” as its cause, an assertion that many are now questioning). Instead, we get anecdotes about people who feel “harmed” or disrespected. And sometimes that’s true, but apparently only a small handful of cases of “harm” are sufficient to indict an entire field, and then to call for changes in its standards and practices.

Here’s the article, and remember that it’s from Nature:

The background is that a bunch of American particle physicists engaged in a once-a-decade exercise called “Snowmass,” in which they assess the state of the field and recommend changes. This time, one of the ten topics included was “elevated diversity, equity, and inclusion” (DEI). Assamagan, a particle physicist at Brookhaven National Laboratory and a leader of the community-engagement project, was interviewed by Elizabeth Gibeney. Here are a few Q&As from the interview, which are indented. Things that are flush left are my own comments.

From the introduction:

Nature spoke to Kétévi Assamagan, a particle physicist at Brookhaven National Laboratory in Upton, New York, and co-convenor of the community-engagement frontier, about the DEI recommendations that emerged from the Snowmass process — and why meritocracy in particle physics an illusion.

I question, of course, how illusory the notion of a meritocracy in physics is, but the article makes clear that, according to Assamagan, physics should be a meritocracy—not, as you might think, that we should eliminate the meritocratic aspects of the field to increase minority representation. No, Assamagan says that if physics were a true meritocracy, there would be more more physicists from underrepresented groups. Here’s his claim:

How do you convince people that particle physics is not a meritocracy?

People in the dominant culture think: “I am not a racist, I don’t see racism in my group, so if these people work hard, it will be fine.” But research has shown that there is much more under-representation in our field than meritocracy would suggest.

The culture is not welcoming and the climate is not conducive for some people to be there. Unconscious bias feeds into how people progress and go into senior positions, and how the senior people then maintain that culture. We are not asking for favouritism for any group. We are talking about making the environment and culture work for everybody in the way that it does for the majority.

I am not aware of that research, but in fact I doubt that it exists. How can you actually demonstrate that if there were a true meritocracy, you would have greater representation of minority groups? The only way I can think of would be to show consistent and pervasive racism in promotion, hiring, and publication, so that really good work by minorities gets ignored, and that this brand of ignoring leads to greater inequities. Those data may in fact exist, but I’d like to see them for particle physics.  As in most fields, physicists, like evolutionary biologists, are eager to find qualified members of minority groups.

Here’s what one of my colleagues said about this, “Another way to demonstrate racism would be to compare the number of undergraduates interested in particle physics with their representation in PhD and professor positions. I would bet that the underrepresentation starts at level 0 – therefore it is a matter of choice, as interested people simply aren’t there to begin with (rather than they being weeded out by racism”.

He/she added, “Finally there is the issue of culture.  Why would a minority individual coming from an underprivileged background be interested in particle physics, a topic he/she was probably never exposed to?  Why would the person not want to be a medical doctor or a social worker or a teacher – dealing with things he/she might perceive as urgent?  Particle physics is an elitist area, frankly for people distant from the reality of the world.”

Note that Assamagan is saying here that particle physics should be a meritocracy, not that it shouldn’t be because meritocracy causes inequities.

As for the second claim, that’s the claim of structural racism caused by “unconscious bias”. Again, we have a claim with no evidence: that senior physicists unconsciously maintain a racist culture in the field.

Can you give me some examples of how an unwelcoming climate can affect particle physicists?

Someone might ask a female physicist, “Can you bring me some coffee?” Or I could go to my lab and a newly hired white person might ask: “When are you going to clean my room?” It is assumed that people who look like me can only be there to do that kind of work. Police have been called on colleagues because they were in the building where people don’t expect them to be.

These incidents make people really uncomfortable and mean you have to work to demonstrate that you occupy that space because you have the training and ability to be there. People might also say you are a ‘diversity hire’. We as minorities are expected to take all of these things, shrug them off and excel like everyone else.

My colleague added this: “Although I am not in particle physics, I would be shocked if it is common for people to say to a woman ‘are you going to clean my lab?’!

Now I’m not doubting that such incidents may have happened on occasion, but I simply cannot believe that they’re so common that they create an unwelcoming climate. That would suggest that we’ve made no progress towards moral equality since the Jim Crow era.  If these things happen all the time, I’d like to know about them. But it’s considered churlish to even ask for evidence. Believe the “lived experience”!

Note, though, that Assamagan does reject the notion of “diversity hires”, which means that he’s also rejecting the notion of hiring that favors members of certain groups—that is, affirmative action.  And indeed, he doesn’t even suggest affirmative-action hires or promotions, so I largely agree with his suggestions below for improving the scientific climate for everyone:

What are some of your recommendations for improving the workplace climate and encouraging diversity?

It starts with the application of a code of conduct for everyone — including anti-harassment policies and policies to protect victims when they report issues. Conducting surveys about workplace climate will tell you what your community needs. For example, for people with disabilities, you need to ensure that meetings are arranged with consideration of their needs.

You also need to start engaging with science in schools and building the pipeline — there are minority-serving institutions that have a lot of capacity that particle physics can tap into.

Leadership is also important. One of the papers submitted to Snowmass says there needs to be a cultural change where people are chosen for leadership positions through excellence, and then promote an environment of equity and excellence, for example by getting away from just automatically rewarding privileges such as being from a top university.

I’m not too keen on the endless codes of conduct promulgated in meetings and by departments, one reason being that this assumes that bad conduct is not already subject to supervision and sanctions. Do we really need this kind of policing? Not if particle physics is largely free from sexual or racial harassment.

As for building the pipeline: YES! To me that is the main way to increase diversity in STEM. But it’s a lot harder than just promulgating codes of conduct or requiring candidates for jobs and promotions to submit DEI statements. To Assamagan’s credit, he doesn’t suggest any such form of affirmative action.

The third paragraph above, where he emphasizes choosing leaders through “excellence,” is more evidence that Assamagan really does want a meritocracy in particle physics, but one that takes genuine quality into account, as it should. There is indeed too much emphasis on “elite schools.”  (This overrating of schools as a sign of one’s merit is the reason that, when someone asks me where I went to school, I say “near Boston.”) At the U of C, we try to avoid this elitism by concentrating solely on research records. For several years I was on the University of Chicago’s promotion and tenure committee in the Biological Sciences, and was continually impressed by how the meetings were dominated by discussion of research quality. Never once did I hear someone touted because they went to an elite university.

In the end, Assamagan’s article is a mixed bag. The good bits are his insistence on a real meritocracy (that will enrage some of his woke colleagues!), and his lack of insistence on affirmative action. Perhaps he realizes that affirmative action is at odds with the true meritocracy he wants—that’s another truth that nobody dare discuss, much less admit.  But Assamagan also implies that particle physics is structurally racist, and that this ongoing racism creates the inequities we see. If that’s true, I’d like to see the evidence.

Why am I concerned with a two-page piece in Nature that, after all, is almost identical to dozens of statements from other areas of science? Because, as I said, to cure a problem you have to correctly diagnose it. It makes a substantial difference if you impute inequities in physics—or any field—mainly to ongoing racism or, alternatively, mainly as a historical relic of racism that has narrowed the opening of the pipelines to success. For the former, you do the fixes that departments are doing now:  codes of conduct, affirmative action, DEI statements, and the like. So far, those haven’t worked.  For the latter, you concentrate on rebuilding society from the ground up to afford everyone equal opportunity from birth. If you do only the former and don’t concentrate on education and opportunity, the problem of disproportionate representation will need constant policing and tweaking via diversity initiatives. If you do the latter, you have the chance to really solve the problem. And that’s why the last Q&A was this:

How much did physicists get involved with the community-engagement frontier during Snowmass?

Not enough. Very few people participated in community-engagement activities, compared with the big physics areas. All of this research-based work was done by just a few people. People feel they understand the issues and want solutions, but they don’t have a lot of time to devote to it.

It’s the time (and money), Jake!

Webb Space Telescope reveals first image, more to come this morning at 10:30 a.m. EST

July 12, 2022 • 8:00 am

You all know that yesterday and today began the public roll-out of photos from the Webb Space Telescope. And the first one, released yesterday and shown below, is a doozy.  Farther down I’ll tell you how to watch when today’s allotment is reveal. First, the photo and what NASA had to say about it (my emphasis). Remember, though, that the photos will be revealed 1½ hours after this post goes up.

NASA’s James Webb Space Telescope has produced the deepest and sharpest infrared image of the distant universe to date. Known as Webb’s First Deep Field, this image of galaxy cluster SMACS 0723 is overflowing with detail.

Thousands of galaxies – including the faintest objects ever observed in the infrared – have appeared in Webb’s view for the first time. This slice of the vast universe covers a patch of sky approximately the size of a grain of sand held at arm’s length by someone on the ground.

This deep field, taken by Webb’s Near-Infrared Camera (NIRCam), is a composite made from images at different wavelengths, totaling 12.5 hours – achieving depths at infrared wavelengths beyond the Hubble Space Telescope’s deepest fields, which took weeks.

The image shows the galaxy cluster SMACS 0723 as it appeared 4.6 billion years ago. The combined mass of this galaxy cluster acts as a gravitational lens, magnifying much more distant galaxies behind it. Webb’s NIRCam has brought those distant galaxies into sharp focus – they have tiny, faint structures that have never been seen before, including star clusters and diffuse features. Researchers will soon begin to learn more about the galaxies’ masses, ages, histories, and compositions, as Webb seeks the earliest galaxies in the universe.

This image is among the telescope’s first-full color images. The full suite will be released Tuesday, July 12, beginning at 10:30 a.m. EDT, during a live NASA TV broadcast.

Here’s that stunning photo. Be sure to go to the NASA YouTube site below at 10:30 this morning:

Matthew sent two tweets showing the vastly improved vision of the sky that Webb’s afforded us. Be sure to click on the arrows to see the two two-photo gifs:

A one-minute video showing the improvement compared to previous optical instruments.

Doesn’t that make you feel small? The “pale blue dot” pales before such an image. But we should also be very proud of our species for creating an instrument that can show us the Universe and our place in it.

When and where to watch:

The Verge gives us the schedule for releasing the photos this morning:

Tuesday, July 12 (Image Release Day)

9:45 a.m. – Live, opening remarks by agency and Webb leadership will air on NASA TV, the NASA app, and the agency’s website ahead of the first images release.

10:30 a.m. – Live coverage of the image release broadcast will air on NASA TV, the NASA app, and the agency’s website. The public also can watch live on FacebookTwitterYouTubeTwitch, and Daily Motion.

. . .NASA has planned a series of briefings on July 12th to roll out the rest of the images. First, at 9:45AM ET, there will be opening remarks by leadership at NASA and the JWST team. Then, at 10:30AM ET, NASA should reveal the remaining images during a live broadcast, which will be followed by a media press conference at NASA’s Goddard Space Flight Center at 12:30PM ET. It’s going to be a jam-packed day of content, but if you’re looking to just see the remaining images, 10:30AM ET is the time to tune in.

Scheduled time: New York: 10:30AM / San Francisco: 7:30AM / London: 3:30PM / Berlin: 4:30PM / Moscow: 5:30PM / New Delhi: 8:00PM / Beijing: 10:30PM / Tokyo: 11:30PM / Melbourne: 12:30AM

And you can conveniently watch the release at NASA’s YouTube site below. The site will host festivities after the photo release and there will be more stuff on Wednesday, though no new photos. Consult the NASA site for details.