The Roman Philosopher Lucius Anneaus Seneca (4 BCE-65 CE) was perhaps the first to note the universal trend that growth is slow but ruin is rapid. I call this tendency the "Seneca Effect."
Showing posts with label EROI. Show all posts
Showing posts with label EROI. Show all posts

Sunday, May 14, 2023

Renewables are not a cleaner caterpillar, they are a new butterfly. A Discussion with Dennis Meadows

 

Dennis Meadows (left in the image) and Ugo Bardi in Berlin, 2016


A few days ago, I received a message from Dennis Meadows, one of the authors of the 1972 study "The Limits to Growth," about a previous post of mine on "The Seneca Effect." I am publishing it here with his kind permission, together with my comments, and his comments on my comments. I am happy to report that after this exchange we are "99% in agreement."


Ugo, 

I read with interest you review of the Michaux/Ahmed debate. Normally I greatly benefit from your writing. But in this case it seemed to me that your text totally avoided addressing the central point - replacing fossil fuels as an energy source with renewables will require enormous amounts of metals and other resources which we have no reasonable basis for assuming will be available. It is not true that peak oil was presented principally as a prediction. Rather critics of Hubert's original analysis misrepresented it as an effort to predict in order to ridicule it -  just as Bailey did for the Limits to Growth natural resource data from World3. I was struck that your critique of Michaux did not contain a single piece of empirical data - the strong point of his research. Rather you engaged in what I term "proof by assertion."

I am personally convinced that there is absolutely no possibility for renewables to be expanded sufficiently that they will support current levels of material consumption. I attach the text of a memo I recently wrote to other members of the Belcher group stating this belief (*). 

Best regards Dennis Meadows

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Dear Dennis, 

first of all, it is always a pleasure to receive comments from you. It is not a problem to be in disagreement on some subjects -- the world would be boring if we all were! Besides, I think our disagreement is not so large once we understand certain assumptions. 

Let me start by saying that I fully agree with your statement that "there is absolutely no possibility for renewables to be expanded sufficiently that they will support current levels of material consumption." Not only is it impossible, but even if it were, we would not want that!

So, what do we disagree about? It is about the direction to take.  The fork in the path leads in two different directions depending on the efficiency of renewable technologies: Path 1): renewables are useless, and Path 2): renewables are just what we need

I strongly argue for Path 2) in the sense that we definitely do NOT need to "support current levels of material consumption" to create a sustainable and reasonably prosperous society. But let me explain what I mean by that.  

First, in my opinion, the problem with Michaux's report is that it underestimates the efficiency of renewable technologies. He says that renewables are not really renewable, just "replaceable." He, like others who use this term, means that the plants that we are now building will not be replaceable once fossil fuels are gone. In this case, creating a renewable infrastructure will be a waste of resources and energy (Path 1). 

This view may have been correct until a few years ago, but it is now obsolete. The recent scientific literature on the subject indicates that the efficiency of renewable technologies (expressed in terms of EROI, energy return on energy invested) is now significantly better than that of fossil fuels. Furthermore, it is large enough that the materials used can be recycled using renewable energy. There is a vast literature on this subject. On the specific question of the EROI, I suggest to you this paper by Murphy et al. You can also find an extensive bibliography of the field in our recent paper,  "On the history and future of 100% renewable research." 

Of course, not everything is easy to recycle, and a future renewable infrastructure will have to avoid the use of rare metals (such as platinum for fuel cells) or metals that are not rare, but not abundant enough for the task (such as copper, that will have to be largely replaced by aluminum). That is possible: the current generation of wind and PV plants is mostly based on abundant and recyclable materials. Doing even better is part of the natural evolution of technology. What we can't recycle, we won't use. 

There is a much more fundamental point in this discussion. It is the very concept that we need renewables to be able to "replace fossil fuels," in the sense of matching in quantitative terms the energy produced today (in some views, even exceeding it in order to "keep the economy growing"). This is impossible, as we all agree. The point is that renewables will greatly reduce the need for energy and materials to keep a complex civilization working. If you think, for instance, of how inefficient and wasteful our fossil-based transportation system is, you see that by switching to electric transportation and shared vehicles, we can have the same services for a much smaller consumption of resources. This concept has been expressed by Tony Seba in a form that I interpret as, "Renewables are not a cleaner caterpillar-- they are a new butterfly"

That doesn't mean that the geological limits of the transition aren't to be taken into account; the butterfly cannot fly higher than a certain height. Then, it may well be that we won't be able to move to renewables fast enough to avoid a societal, or even ecosystemic, crash. On this point, please take a look at a paper that I co-authored, where we used the term "the sower's strategy" to indicate that the transition is possible, but it will need hard work, as the peasants of old knew. But staying with fossil fuels is leading us to disaster (as you correctly say in the document for the Balaton group) while moving to nuclear fission simply means exchanging a fossil fuel (hydrocarbons) for another fossil fuel (uranium). Going renewables is a fighting chance, but I believe it is the only chance we have.   

There is an even more fundamental point that goes beyond a certain technology being more efficient than another. Going renewables, as Nafeez Ahmed correctly points out, is a switch from a predatory economy to a bioeconomy.  Our industrial sphere should imitate the biosphere that has been using minerals from the Earth's crust on land for the past 350 million years (at least) and never ran out of anything. As I said elsewhere, we need to do what the biosphere does, that is:

1. Use only minerals that are abundant.
2. Use them sparingly and efficiently.
3. Recycle ferociously. 

If we can do that, we have a unique opportunity in the history of humankind. It means we can build a society that does not destroy everything in order to satisfy human greed. Can we do it? As always, reality will be the ultimate judge. 

Ugo


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The answer from Dennis Meadows

Ugo, 

Thank you for sending me your article. I agree that the main difference of opinion lies in the direction to take. I am reminded of the defining characteristic of professors - two people who agree on 99% and spend all their time focusing on and debating the other one percent. Because I largely agree with you, my only relevant comment on what you say is that you have overly limited our options: 

So, what do we disagree about? It is about the direction to take.  The fork in the path leads in two different directions depending on the efficiency of renewable technologies: Path 1): renewables are useless, and Path 2): renewables are just what we need

I would not choose either path; rather I believe it is time to quit focusing on fossil energy scarcity as a source of our problems and start concentrating on fragility. The debate -renewables versus fossil - is a distraction from considering the important options for increasing the resilience of society.

Dennis Meadows




___________________________________________

A minor point. You say, "It is not true that peak oil was presented principally as a prediction." I beg to differ. I have been a member of ASPO (the Association for the Study of Peak Oil) almost from inception and part of its scientific committee as long as the association existed. And I can say that one of the problems of the approach of peak oilers was a certain obsession with the date of the peak. That doesn't disqualify a group of people whom I still think included some of the best minds on this planet during that period. The problem was that few of them were experts in modeling, and models are like weapons: you need to know the rules before you try to use them. By the way, you and your colleagues didn't make this mistake in your "Limits to Growth" in 1972; correctly, you were always careful of presenting a fan of scenarios, not a prediction. Later on, Bailey and his ilk accused you of having done what you didn't do: "wrong predictions." But that was politics, another story. 

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(*) Statements about being realistic about technology, alternative energy, and sustainability
Dennis Meadows

April 11, 2023 message to the Balaton Group

Dear Colleagues,

I have often described politics as the art of choosing which of several impossible outcomes you most prefer. It is important to envision good outcomes. It may be useful to strive for them. But it is important to be realistic. The recent discussion about technology, alternative energy, and sustainability are based on several implicit assumptions, which I believe are unrealistic. At the risk of being an old grump, and recognizing my own limited vision, I list here some statements that I believe from the study of science, history, and human nature to be realistic.

#1: There is no possibility that the so-called renewable energy sources will permit the elimination of fossil fuels and sustain current levels of economic activity and material well- being. The scramble for access to declining energy sources is likely to produce violence. 

#2: The planet will not sustain anywhere close to 9 billion people at living standards close to their aspirations (or our views about what is fair).


#3: Sustainable development is about how you travel, not where you are going.

#4: The privileged will not willingly sacrifice their own advantages to reduce the gap between the rich and the poor (witness the US.) They will lose their advantages, but unwillingly.

#5: The rapidly approaching climate chaos will erode society's capacity for constructive action before it prompts it.


#6: Expansion and efficiency are taken as unquestioned goals for society. They need to be replaced by sufficiency and resilience.

#7: History does not unfold in a smooth, linear, gradual process. Big, drastic discontinuities lie ahead - soon. 

#8: When a group of people believe they must choose between options that offer more order or those affording greater liberty, they will always opt for order. 

Unfortunately so, since it will have grave implications for the evolution of society’s governance systems. Dictators will always promise less chaos than Democrats.

Sunday, February 5, 2023

The Failure of Scientific Journals: the Failure of Science

 


Scientific, "peer-reviewed" journals are rapidly becoming a major stumbling block to scientific innovation. Here, I tell the story of one of these journals that I myself helped create. From this, I argue that the loose network that science used to be (an excellent example of a "social holobiont") has degenerated into a rigid, hierarchical structure that allows no changes and no innovations. And of what use is science if it doesn't innovate anymore?


"Biophysical Economics and Sustainability" is a scientific journal I helped create back in 2016. I still think it was a good idea, but it didn't work as expected. So, I resigned from my position as journal editor this December (1). But let me tell the story from the beginning. 

The journal was the brainchild of Charles W. Hall and David Packer. About Charlie Hall, he was the developer of the fundamental concept of EROI (energy return on energy invested). Dave Packer was a senior editor at Springer (now retired). The idea was to create a high-quality journal that could offer a publishing outlet in the field called "biophysical economics" or "econophysics." You may have heard about this field: it is an approach to economics based on the same models used in biology. The idea was to examine the essential elements of an economic system: an entity that transforms resources into products, then waste. The main difference with traditional economics is that biophysical economics is focused on material things that can be measured: energy, mass, materials, and the like. In contrast, economics is heavily focused on money and prices and often loses contact with the physical world. 

For instance, it is often said in the mining industry that "prices create resources." The idea is that when a mineral resource becomes scarce because of depletion, prices become higher, making it possible to extract resources that were not profitable before. It is a magic trick supposed to create something out of nothing. No need to say that it doesn't work in the real world. And it doesn't work in the biophysical approach, either. The concept of EROI (Energy Return for Energy Invested) is fundamental to understanding this point. It tells you what's possible to do with energy technologies and what's not possible. But it just does not exist in traditional economics: it is ignored, and, as a consequence, plenty of resources are wasted in non-viable energy technologies, for instance, biofuels and hydrogen. 

It may be time to replace the obsolete approach of traditional economics with the more rigorous one of biophysical economics. But it is just not happening. If you look at the number of publications in scientific journals, you see that growth has stalled during the past 10 years, and now it is going down. A search of the term "Biophysical Economics" on "Scopus" shows that not only growth stopped about 10 years ago, but the number of published studies remains small, a minor fraction of the publications in economics.  


Could a small group of dedicated people change this situation? We did our best with "Biophysical Economics and Sustainability," but if you peruse the list of publications, you see that the journal attracted mainly medium-quality, only marginally interesting publications. As a result, it never really impacted the field it was supposed to innovate. 

The main problem was the high cost of publication. If you want your article published in an "open access" format in "Biophysical Economics," you have to place $3,390 on the table. It is a lot of money for the strained budget of a scientist who is not part of the global scientific elite. One consequence was that I found myself as the editor of a journal where I could not afford to publish my research papers (one of the reasons why I resigned). Of course, publishing in the "paywalled" format will cost you nothing, but it will require about $40 for readers to access your article. And that guarantees that nobody will read it unless they have access to an academic library that subscribes to the journal. In the latter case, the paper will be read by a small number of specialists (maybe) but will have no impact on decision-makers and on a wider circle of scientists. No wonder the journal does not attract high-quality papers. If scientists have a paper they care about and want others to read, they'll publish it open-access in journals that charge a lower fee or none. 

Why does a publisher pursue a pricing policy guaranteed to throttle the flow of good papers to death? It is not a bug; it is a feature of the scientific publication process. It is well-known that consumers rely on prices to determine the quality of products. So, by making specific journals very expensive, publishers make them desirable, even though publishing in them means sacrificing a significant fraction of one's research budget. But why don't scientists rebel against this policy? It is because they are embedded in a Nash equilibrium and have no individual advantage in changing the system. 

You probably know that "science" is supposed to be formed of a bunch of disinterested truth-seekers who spend their lives investigating Nature and her ways. It is a good definition if you apply it to what science was. At the time of the great pioneers, say, Galileo, Newton, Darwin, and many others, science could change the way we perceived the universe with the work of individuals whose primary tool was a pencil (or a quill). Up to the times of Einstein, Bohr, Planck, and others, about one century ago, this feature of science had not changed so much. 

Of course, no scientist ever worked alone. All of them were part of a network of people who continuously communicated with each other and shared ideas and methods. Newton understood this point perfectly well when he said that he owed his successes to having been standing "on the shoulder of giants." But science was a peculiar organization: it had no leaders, no governing bodies, no "kings," and no "popes." Some scientists had much more prestige than others, but science was an egalitarian organization where ideas flowed freely from one scientist to another. In principle, all scientists had the right to propose new ideas and to be heard by their peers. At that time, there was no such thing as the rigid hierarchy of scientific journals that exists nowadays. And journals didn't charge such outrageous fees for the privilege of publishing in them.

Allow me to use the term "holobiont" to describe science as a network. A holobiont is a complex system that arises by self-organization based on local interactions. The term is used mainly in biology, but the definition can be extended to human social systems; science is one example. Up to recent times, science has been exactly fitting the definition of holobiont: it was a loose network of independent nodes interacting with each other at a level of near equality

One characteristic of holobionts as networks is that they can evolve and change. It is because when an element of the network changes, it can transmit the change to all the other elements using a chain reaction of local interactions. In this way, new ideas diffused in science: a good idea had a chance to make itself heard and affect the whole network. Of course, it took some time and, usually, the disappearance of an older generation of scientists, but generally, it worked. Just think how quantum mechanics could radically change the very basis of how we understood the nature of matter, back around the first decades of the 20th century. It was rabidly contrasted at the beginning, but gradually, it imposed itself. And that radical change took just a few decades to be globally accepted. 

Things are different now. Nowadays, new ideas need help finding a space in a scientific environment that has become rigid and static. The example of biophysical economics is just one of several cases where new paradigms remain marginalized. That it is a general phenomenon in science can be seen in a recent paper published in Nature. Here are the main results. 



As you see, the innovative content of new papers, measured in terms of the "CD" (conservative/disruptive) index, has declined over the past 60 years. Even more worrisome is that, despite these data, nobody, nowhere, seems to have been publicly expressing the idea that some radical changes are needed in science. Nobody wants to rock the boat, fearing they would be the ones dumped overboard. 

Now, a fundamental point. All this does not mean that science as we know it is wrong. Science remains grounded on a solid knowledge base built over centuries of hard work. Thermodynamics, quantum mechanics, microbiology, and atmospheric physics are just examples of fields that generated profound and valuable knowledge. Within some limits, they are still generating it. But, recently, science seems to have undergone a process of "hierarchization." Hierarchical structures are rigid. They change only if the central vertex changes. And if the central vertex resists change (as it usually does), the network remains as nimble as a beached whale. Until it rots away. In a certain sense, it was unavoidable. Most human organizations tend to evolve by turning into rigid hierarchies that resist change. 

In the case of science, it was the result of the classic combination of the carrot and the stick. The carrot is the research funding: right now, you can obtain funds for your research only if you follow the extremely detailed rules provided by the funders -- private industries or state agencies. This is why immense efforts are spent searching for solutions for the wrong problems (for instance, creating a "hydrogen economy"). The search for funds is competitive, and you must comply with the rules to ensure you are allowed to continue. 

The other cause of the hierarchization of science is the stick. It is here that science publishers play a fundamental role. This is a subtle point: publishers do not select what is to be published (2). They only select prices. Because publishing is so expensive, only those scientists who can control large research grants can publish in the best (i.e., more expensive) scientific journals. That, in turn, ensures they gain more prestige and can access more grants. With more grants, they can publish more papers in high-ranking journals. Scientists who don't belong to the inner circle of financing are forced to publish in second or third-rank journals and are marginalized and ignored (3, 4). Innovative work cannot simply move out of the swamp where it is confined, so it cannot influence the top layer of scientific research. 

So, what is left of science if it cannot produce innovation? Little more than a giant machine dedicated to grinding pure air (or, as we say in Italy, "frying with water"). Little can be done to reform this fossilized structure from the inside. Every attempt to change something is met with a rearranging of the network in such a way as to maintain its earlier structure. It is what happened to "Biophysical Economics and Sustainability,"  a nice try, but it couldn't have worked. So, the only way to get rid of an ancient hierarchical structure is to let it crash down and then replace it with a new one. It is the mechanism that generates the Seneca Collapse. 

It happens, usually as the result of an external perturbation that makes it impossible for the whole network to maintain the links that keep it together. The powers that be could simply decide that they don't need science anymore and simply cut financing to it. A starved holobiont is a dead holobiont, so it would be the end of science as we know it. It is difficult to say what can arise in its place but, in principle, it might be something better than the science as we know it today.  

For a while, many of us thought we could find truth in a nearly-deified form of "science," only to discover that all-too-human scientists had corrupted the idea, turning it into a giant circus where funny-looking beasts run and run in a circle, but arrive nowhere. So we remain facing Pilate's question: Τί ἐστιν ἀλήθεια? What is truth? Maybe one day we'll know. 


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(1) If you go to the website of "Biophysical Economics and Sustainability), you still find my name among the editors. Sometimes, Springer is as reactive as a sleeping hippo.

(2) Recently, a new trend has been developing in science. It is the classic censorship, in this case, taking the shape of the "paper retraction" mechanism. So far, it has been rarely used, but it is becoming popular, as you can see on the "retraction watch" site. As a subset of the ordinary "fact checkers" who censor social media, a group of specialized science fact-checkers has appeared, possibly paid by the powers that be. They are engaged in finding mistakes in published papers, then pressing the editors to retract them. In principle, getting rid of those bad papers that survive the often sloppy reviewing mechanism of scientific journals is not a bad idea. However, in practice, it has a great potential for direct censorship of politically incorrect results. For example, during the Covid crisis, hundreds of papers on the subject were retracted. There is no doubt that many were bad papers that deserved retraction, but I could tell you stories about a few that were retracted simply for ideological reasons. 

(3) Here is an example of how impermeable the hierarchy of science can be. In 2015, two Turkish physicists, Ibrahim Semiz and Salim Ogur published a paper exploring the possibility of a Dyson sphere built around a white dwarf star. In 2022, B. Zuckerman of the University of California LA published a paper on the same subject: Dyson Spheres around white dwarves. It was not plagiarism because the two papers approached the subject in different ways. Still, it is remarkable how Zuckerman did not cite the two Turkish physicists, even though he had published it in the same paper repository. You can also see the different resonance of the two studies: the paper from California was discussed in the mainstream press, while the Turkish one was ignored. It is the hierarchical structure of science at work. Provincial scientists are marginalized. 




(4) Another recent case of censoring innovative ideas is that of a group of Italian scientists, Loredana Frasca, Giuseppe Ocone, and Raffaella Palazzo, who published an article where they evaluated the cost/benefit ratio of COVID-19 vaccines. They concluded that mass vaccination was not justified in many cases, particularly in view of the adverse effect on people with cardiac issues. It generated a strong backlash from their employer, ISS (Istituto Superiore di Sanità), which officially and publicly castigated them for having said things that the institute's leaders didn't approve of (there was once something called "academic freedom," alas....). The interesting point is that in the debate that ensued, some scientists took sides with the ISS by arguing that since the paper was published in a second-tier journal (MDPI's "Pathogens"), then it just didn't deserve any attention. Now, I can tell you that MDPI may not have the same prestige as "Nature" or "Science," but that doesn't mean the papers it publishes are not good. Snubbing a perfectly valid work just based on in which journal it had appeared is a good illustration of how elitarian science has become.