X-twitter Linkedin Link Link
    fr
    • Awards
    • Ceremony
    • Publications
      • Books in french
      • Books in english
      • African books
    • Chronicles
    • Great economists
    • Partnership
      • ADAE
      • IPM
      • CERFRANCE
      • AF2I
      • SEIN
      • AEFR
      • ILB
    • Contacts
    • Awards
    • Ceremony
    • Publications
      • Books in french
      • Books in english
      • African books
    • Chronicles
    • Great economists
    • Partnership
      • ADAE
      • IPM
      • CERFRANCE
      • AF2I
      • SEIN
      • AEFR
      • ILB
    • Contacts

    The ethical approach to AI: towards sustainable AI

    Chroniques

    Jean-Jacques Pluchart The encyclical Magnifique Humanité published in May 2026 (see clubturgot.com 114)    has rekindled the debate on the ethical principles of AI. Various movements, made up of institutions, companies, scientific laboratories and think tanks, are striving to define ethical frameworks – in the form of codes and charters – based on philosophical, sociological and psychological considerations, but this framework is sparking debates between regulationists and libertarians. The foundations of AI ethics Ethical deliberations relating to AI practices follow three main approaches: universal, normative and applied. The first – of an axiological nature and inspired by Kant and Rousseau –   is based on the principles and values that underpin life in society: respect for people, truth, justice, nature, etc. The second –  known as legalistic or prescriptive – covers moral judgements and social values, such as true or false, good or bad, fair or unfair, etc. The third – of a praxeological nature – measures the consequences, externalities or impacts of a system, behaviour or object on the economy, nature, society or the individual. It is most often applied to new technologies, in particular AI, and to management, in particular sustainable management (Pistilli, 2024). Ethical frameworks for AI In order to limit their negative impacts on collective and individual thoughts, decisions or behaviours, guides or ethical charters published by companies and normative codes, frameworks and/or regulations issued by regulators (international organisations, nation-states, associations), aim to provide a framework for the design of software and the use of its data and results by companies (Constantinides & al, 2024). The codes generally do not have a deontological or moral dimension, unlike charters, guides or, in France, the “raisons d’être” of companies. International institutions such as the OECD, the UN, UNESCO and the G7 have been working since 2019 to establish a “normative ethics” and “global governance of AI”. The Vatican, notably inspired by the work of Bonanti (2018), who inspired several codes, advocates the advent of an “algo-ethics” (or ethics of algorithms) based on the principles “of transparency, social inclusion, responsibility,impartiality and reliability”.  Overall, according to Menecoeur (2020), the 126 documents on AI ethics identified worldwide are divided between public codes (national and international) and private guides (from companies, universities and associations). But the leaders of the United States, the People’s Republic of China and the European Union, as well as the leaders of their digital companies, apply in practice rules, codes and ethical guides that often reflect different approaches. The ethical relativism of AI European texts – and in particular the AI Act – are the subject of intense lobbying, particularly by GAFAM,  in order to avoid open-source AI and the decommissioning of certain generative AI software. Most European think tanks recommend strengthening the regulation of AI, such as the Institut Montaigne, which launched the Objectif IA operation in favour of digital training, the Observatoire de la RSE, which is striving to put AI at the service of the application of ESG standards, and the Institute Louis Bachelier, which has initiated the Good in Tech program to measure the impact of AI on society. But a collective of 30 global AI leaders has denounced the European approach, stating that “Europe hasbecome less competitive and less innovative compared to other regions, andit now risks falling further behind in the AI era due toinconsistent regulatory decisions“. These reactions show that AI codes and guidelines are subject to a form of “ethical relativism”, because they depend on both technological and economic factors, but also – and increasingly – on geopolitical and cultural considerations. They are interpreted differently depending on the disciplines, professions and ideologies of the AI stakeholders and ideology. In the United States, under the influence of the Federal Guidelines for Sentencing Organisations (1991), practical guides (guidelines) are more common among American companies than among European or Chinese firms. The GAFAM companies have initiated a Partnership on AI which recommends the application of general principles and a collective commitment: “We are committed to conducting open research and dialogue on the ethical, social and economic implications of AI” (Hern, 2016). But the interpretation of these principles differs from one company to another. Google focuses on social criteria (in particular non-discrimination). Apple has a charter based on honesty and respect for stakeholders.  Meta only states that it applies the professional standards in force. Amazon adopts the fundamental principles, but paradoxically states that “AI guides humans”; Microsoft and Open AI display “Codes of trust reflecting their cultures and values”; they recognise “the potential for bias in algorithms and strive to mitigate its impact”. In Europe, reflections on the ethics of AI were launched in 2015 and led to a regulation aimed at the protection of personal data (Data Governance Act) published in 2018 (but applied in 2023), then a white paper on AI (2020), a directive on microprocessors (Chips Act, 2023) and a directive on artificial intelligence (AI Act) passed in 2024 (but applicable in 2026). These texts seek to manage the risks induced by AI and to promote a “trustworthy AI”   based on compliance with the law (Lawful AI), ethical values (ethical AI) and technical skills (robust AI). The  principles  – borrowed from bioethics –  relate to human autonomy (respect for citizens’ rights), the prevention of any harm  (protection of people and property), fairness (between users) and  explainability  (of software). These principles were then broken down into “requirements”: the systems (data, software, results) must “remain under human control”; they must be   robust,  reliable  and  transparent “. Compliance with the requirements is monitored by so-called “technical” methods: auditing of “trustworthy architectures” (Trustworthy AI), monitoring of the application of design standards (X-by-design), methods of explanation, testing, validation and implementation. Non-technical methods complete this system: regulation by codes, charters and guides, certification of systems, guidance on AI training and AI research. Among these methods, the AI Act prioritizes so-called “foundational” AI systems according to three levels of risk to public and private life: models classified as “unacceptable”, leading to intrusive and discriminatory uses of AI, are prohibited; systems classified as

    July 1, 2026 / 0 Comments
    read more

    Céline MARANGE, La guerre d’Europe a commencé, Les Arenes, 2026.

    book 2026,  publications

    On 5 March 1946, Winston Churchill delivered a speech in which he said, “I do not think that Soviet Russia desires war; what it desires are the fruits of its power as well as of its doctrines. Our difficulties and dangers will not disappear if we turn a blind eye, if we wait to see what happens, or if we practise a policy of appeasement.” These reflections from another time are strikingly relevant today. The Kremlin wants to become once again the feared power it was in the past by reasserting its rights to lands it considers ancestral. Faced with the rise of these dangers, it is imperative to have clear ideas about the state of the threat, the adversary’s modes of action, our interpretation biases and our level of preparedness. There is also a much more pernicious danger to be feared: that of the alteration of democratic systems, as artificial intelligence will allow targeting with rare precision and the manipulation of information with unsuspected sophistication. For Ukraine, it is a war of national liberation, a struggle for the survival of the state and a fight for freedom, since the Russian president denies the existence of the Ukrainian nation. The war has forged a new Ukraine, tested, exhausted but united and resolute. The Kremlin is using the war in Ukraine to stage its confrontation with Western countries and accentuate the divisions in the world. What is certain is that the current confrontation is not only about the survival of Ukraine and the security of Europe, but also about the sustainability of liberal democracy, which is now under attack from all sides. Faced with a danger that is certainly imprecise but blatant, dealing with the most pressing issue is a necessity; imagining the worst is a categorical imperative. Without this effort of imagination and a surge of willpower, there is a great risk of being caught off guard. Because Russia is actively preparing for the possibility of the war spreading across Europe. Several indicators show that Russia is preparing for a prolonged war: The defence budget, which represents 38% of Russia’s budget, shows that the Kremlin’s priority is to continue the war. It is rearming at full speed while organising itself to improve its supplies and armaments: it manufactures 300 tanks per year – France, which is the best equipped, has 215 Leclerc tanks. Russia is increasing the size of its army: 600,000 soldiers compared to 150,000 before the war in Ukraine. Lifting the sanctions would give the Russian economy a breath of fresh air. A militarist regime feeds on war; there are many actions that are already affecting Europe and France in particular, there are also attacks on the integrity of public debate aimed at influencing general opinion, and above all there are attacks on national cohesion. Europe must prepare for a long-term confrontation where anything goes. Céline Marangé is a researcher on Russia, Ukraine and Belarus at the Strategic Research Institute of the École Militaire, and an associate member of the Research Centre inSlavic History (Université Paris 1 Panthéon-Sorbonne) Reading summary prepared by Michel Gabet

    July 1, 2026 / 0 Comments
    read more

    Marlène Benquet, La finance aux extrêmes – Enquête sur le capitalisme autoritaire en France, La Découverte, janvier 2026, 256 pages, 22 €.

    book 2026,  publications

    Sociologist Marlène Benquet’s work, the result of ten years of research, aims to define how a “second finance” is constructed—a novel mode of capital accumulation by financial actors fully aware of their “value,” but with political consequences that favor the development of a libertarian-type regime through authoritarian capitalism. One of the main characteristics of this second finance is its detachment from the market driven by traditional financial actors, who collect savings, such as banks, insurance companies, pension funds, and household savings. In short, the market considered as the only way to invest in listed companies. Second-tier finance develops outside the market but without truly severing ties with it, through over-the-counter transactions. This allows it to be less regulated while retaining considerable freedom to invest in unlisted assets. Consequently, it enables the transformation of assets previously considered ineligible (real estate, unlisted companies, infrastructure, derivative financial products, pension funds) into assets. Second-tier finance develops outside of traditional markets. Its purpose is therefore not to promote competition. It encourages privatization in order to seize control of certain sectors, such as healthcare. The accelerated concentration of clinics since the early 2000s is a clear example. Marlène Benquet also points out that numerous examples support this argument, citing a window of opportunity created by the Commission for the Liberation of Growth (2008), which specifically encouraged third-party investors to acquire stakes in pharmacies: “A Health Europe Directive, driven by the European Union, which also encouraged third-party investment, particularly from financial players, in pharmacy capital, has created assets in the healthcare sector that previously escaped financialization. These assets have become highly profitable and are guaranteed by the State, since payment, pricing, usage, and profits are all guaranteed by the national health insurance system.” The workings of this mechanism are perfectly adjusted. Continuing the demonstration leads to an inescapable conclusion: (1) no competition, (2) a quasi-rent-seeking situation, (3) a level of service guaranteed by the State. Zero risk, maximum profit. The book is based on genuine fieldwork conducted using an indisputable research methodology (some sixty interviews with financial players, who were “more accessible than expected,” and access to archival material comprising 2,600 documents). This on-site , in-vivo observation of financial players in their daily lives is transcribed in a rich verbatim style from the very first chapters. The conclusion—which appears to be the author’s true motivation—reveals a kind of unwritten strategy employed by this secondary financial sector, paving the way (or perhaps even providing a mediated platform?) for an authoritarian libertarian ideology widely shared abroad and in France. The actors (agents of normalization), described as conservatives, are explicitly mentioned by the author when establishing a link between these “extreme” political alternatives and their economic influence. Sociologist Marlène Benquet is a research director at the CNRS and a member of the Interdisciplinary Research Institute in Social Sciences (IRISSO). Her work focuses on mass retail and the world of international finance. Alain BRUNET

    July 1, 2026 / 0 Comments
    read more

    How does the company apply AI? The example of banking.

    Chroniques

    Are the canonical observations of Abernathy and Utterbach (1975) on the transition from experimental innovation to applied innovation still valid half a century later? Will the example of AI applied to banking activities make it possible to verify this? Since the 2020s, banks have been engaged in a vast process of AI-driven innovation of their products, services and systems, as well as of their relationships with their customers, their staff, their partners and regulators. These innovations aim to personalize products and services according to customer segments (households, businesses, local authorities, governments), their risk-return profiles, and the types of services provided (payment, credit, investment, etc.).  They are seeking to diversify the current banking interface and integrate the payment function into various objects (telephones, homes, vehicles, glasses, watches, etc.). Their aim is to adapt credit and insurance offers to each purchase, and to automate investment management according to the risk profiles of savers and their ESG scoring requirements.  They aim to ensure that each transaction is supported by a “robot advisor” or  an AI-“augmented” banking advisor, capable of carrying out prospecting, projections, simulations and training. Thanks to AI, they are striving to better support start-ups in their “valleys of death” and industrial or financial groups in their merger and acquisition projects (especially cross-border), with the help of structured multi-disciplinary networks. In the structured products market, AI applications  already allow for the automatic selection of counterparties, an analysis of the levels of protection and barriers offered, the coupons proposed, the pricing of embedded options, the strength of balance sheets and the rating of issuers, and the depth and quality of the secondary market. But above all, AI makes it possible to ensure better security for customer data, processing, transactions, settlement-delivery and securities custody. Achieving these objectives already requires the most advanced AI applications, such as biometric identification, automatic flow traceability, scheduled data dissemination, the systematisation of smart contracts (in MNBC and tokens), the control of loans financing investments with ESG impact (such as Tree Token), the development of “complementary currencies” (such as Bancor) and micro-payments promoting the inclusion of unbanked people (such as Arcadia Blockchain), etc. The staff of each bank must therefore demonstrate “innovism” (Phelps et al., 2020), so that their bank is not a “follower” but a “pioneer” in the application of AI. Innovation encompasses the ability to anticipate new, abnormal or crisis situations by setting up “innovation laboratories”, creating a financial “imaginarium” and stimulating the “desire to create” among staff at all levels.  It therefore seems that, in the light of this example, the technological acculturation of companies is both more comprehensive and faster than it was during the “thirty glorious years”. Abernathy, W. J., & Utterback, J. M. (1975). A Dynamic Model of Process and ProductInnovation. Omega, 3(6), 639-656. Phelps, E., Bojilov, R., Hoon, H. T., & Zoega, G. (2020). Dynamism: The Values ThatDrive Innovation, Job Satisfaction, and Economic Growth. Cambridge, MA: Harvard University Press. Jean-Jacques  Pluchart

    June 23, 2026 / 0 Comments
    read more

    Benjamin MOREL- Crise politique, crise de régime-Éditeur ‏ : ‎ Odile Jacob- 25th march 2026- 176 pages

    book 2026,  publications

    The Fifth Republic is based on a simple fact: whoever holds the majority holds power. Yet this majority has become elusive. Power has left the Élysée Palace, is not in the National Assembly, and no longer resides in the government. The aim of this book is to understand how a system that has long functioned on the basis of a clear majority becomes unstable when that majority disappears. Benjamin Morel begins by examining the reasons why we have shifted from a stable two-party system to a dysfunctional three-party system. He then analyzes the effects of this shift on the political system: the temptation to expand the powers of the head of state by overinterpreting the Constitution, the proliferation of expedients to govern regardless (maintaining a resigned government, executive orders…), all of which are precedents whose accumulation paves the way for an illiberal drift. The book presents the following themes: tripolarization, an unstable legislature, escaping the trap of instability, a regime in a fragile balance, and governing nonetheless under a Constitution designed to ward off instability while remaining vulnerable to illiberal abuses. The book’s conclusion is tinged with a certain optimism: the one who defines the crisis is also the one who provides solutions, provided we do not allow ourselves to be misled by false prophets. Changing the electoral system is not an end in itself. Parliament must be better equipped to enable it to ensure the co-construction of legislation between Parliament and the government. The functioning of a regime is not a metaphysical property of the norm; it is a property of the society that receives it. The state functions like public services. A government can lose its political legitimacy when it can no longer translate election results into consent: To govern despite this is to govern in spite of it!  What holds a legal order together is everyone’s conviction that it is in their interest to respect it and play by the rules. Some say it would be easy to solve the problem. A new Constitution would cure our ills. A new election would sweep away our worries. What is causing the crisis is the overall mismatch between the election and the expectations surrounding it. These expectations are divided into three camps, yet they all expect one of them to govern with the absolute powers of a majority bloc. All eyes remain fixed on the presidential election, even as the electoral landscape makes the return of a Jupiter unlikely. Faced with this paradox, which every citizen carries within them, the solutions lie not in the texts but in the minds! Dominique Chesneau

    June 23, 2026 / 0 Comments
    read more

    Leon XIV, Encyclique « Magnifique humanité »- Publisher‏ : ‎ CERF ; ‎ 25 th may 2026 ;224 Pages.

    book 2026,  publications

    The encyclical, which “does not offer an analysis of AI because it is not possible to provide a single, comprehensive definition of it,” focuses on human dignity and moral responsibility in the face of emerging technologies. It follows in the footsteps of Leo XIII, who presented the social doctrine of the Church and emphasized that the pursuit of profit cannot be the be-all and end-all of human society. The Pope explains two reasons why the book is not technical: any statement about AI risks quickly becoming obsolete given the speed at which these systems evolve; and all of us, including those who design them, know little about how they actually work! Furthermore, the book does not make alarmist claims such as that AI would lead to mass layoffs and a widespread dumbing down of the population (“do not be afraid”), but, drawing on the work of numerous working groups cited in the book, it argues that good will come from this revolution, provided that this good is not monopolized by a tiny minority because “a large part of this technology falls under the common good.” In seeking to establish humanistic principles for the development and use of AI, the goal is not to create restrictive regulations that would stifle innovation, but rather to incorporate ethical and moral considerations into the design of models and the selection of training data. And according to Ricoeur and Levinas, the essence of ethics lies in respecting the other by seeing oneself in the gaze of one’s counterpart, beyond laws and rules. A few chapters—the 3rd and 4th deserve special attention among: (1) The evolution of the Church’s social doctrine and its role as a “theology of communion” throughout history, (2) The foundations and principles of social doctrine, including human dignity, the common good, the universal destination of goods, subsidiarity, solidarity, and social justice, (3) Analysis of the risks associated with artificial intelligence, the concentration of technologies, and the need for a common code of ethics, (4) Preserving the human dimension in the digital transformation, valuing work, education, and freedom in the face of commodification, (5) Building a “civilization of love” in the digital age, promoting peace, dialogue, and multilateralism. We will recall the five principles of the Catholic Church’s social doctrine, which have been presented by past and present economists and elaborated upon in the first two chapters: the principle of the common good (developed by Jean Tirole in his seminal work), the principle of the universal destination of goods (mentioned by 18th-century moralists), the principle of subsidiarity (in management literature, the term “subsidiarity” and the difficulty of its implementation are discussed in France-Lanord and Vannier 2014; Verrier and Bourgeois 2016, 27); the principle of solidarity and the principle of social justice. To illustrate the relevance of the topics discussed, let us cite a few illustrative excerpts from the book: let us avoid the pretension of a single language capable of translating everything into data and performance metrics, even the mystery of the person; entrusting, in practice, to an algorithm the power to select who deserves what, without anyone bearing the weight of the decision, amounts to entrusting it with the task of redefining the limits of human possibilities; data ownership must be regulated and managed as a common good ( !); developers bear an ethical responsibility because every design choice expresses a vision of humanity These concerns and humanistic recommendations are echoed by Anthropic, which cannot predict whether the phenomenon of AI misalignment (when an artificial intelligence pursues goals that conflict with human values or do not truly correspond to what humans have asked of it, Ed.) will ever be fully resolved. Anthropic continues in a text published by its think tank, the Anthropic Institute: “We believe it would be good for the world to have the option to slow down or temporarily suspend the development of advanced AI, in order to allow societal structures and alignment research to keep pace with technological progress.” This nearly 200-page letter, dedicated to “the protection of the human person in the age of artificial intelligence,” resonates far beyond Catholic circles and “constitutes a political and humanist manifesto of unprecedented scope.” Dominique Chesneau

    June 23, 2026 / 0 Comments
    read more

    Anton BRENDER, Géopolitique de la dette, Eds Odile Jacob, 180 pages.  

    book 2026,  Hommages,  publications

    Around the world, debt is rising sharply and records keep being broken. The threshold of 300,000 billion, euros or dollars, the difference is no longer essential at this scale, in public and private debt has now been crossed. Speaking about France’s debt in the summer of 2025, François Bayrou referred to “an Everest of debt” during his time at Matignon. But Anton Brender reminds us of an often overlooked truth: “the debts of some are always the claims of others.” While there has never been so much debt, this is also because household financial wealth has never been so high. The “Everest of debt” therefore has its counterpart in an “Everest of global savings.” In a highly pedagogical manner, the author explains the fundamental mechanisms underpinning a financial economy. On one side are the natural borrowers: companies, which need to finance their production capacity, factories, warehouses and investments; and governments, which provide non-market services and must finance their deficits. On the other side are the natural savers: households, primarily, whose savings directly or indirectly meet the financing needs of the economy. The end of the Bretton Woods agreements, the oil shocks and the increasing opening of capital movements broadened the scope of savings and debt. They also contributed to the emergence of external imbalances, born from the interaction between the economic policies pursued by different countries. China’s entry into world trade in 2001 was, in this respect, a decisive moment. Chinese trade surpluses captured part of domestic demand in the United States and Europe. They contributed to the destruction of industrial jobs in Western countries and led central banks to respond by sharply lowering interest rates. American household debt thus enabled, as its mirror image, Chinese household saving. This dynamic helped prepare the ground for the financial crisis of 2008. In a quarter of a century, the United States became the borrower of last resort for the planet. It financed the development of emerging countries at the cost of a colossal debt and the loss of millions of industrial jobs. In January 2025, Donald Trump announced the end of what he called a “scam” and embarked on a policy of unprecedented tariff barriers, the largest since the 1930s, while largely disregarding existing rules. The dynamics of world trade, and therefore of global savings and debt, are profoundly affected by this shift. The world may therefore move from a situation characterized by a limited number of borrowers to one in which financing needs become far more numerous. Asian industrial powers, first and foremost China, will have to support their domestic markets. Japan will have to encourage its population to draw down savings. Europe will have to finance its defence, security and energy transition simultaneously. Emerging countries will also need capital to continue their development. Ph Alezard

    June 17, 2026 / 0 Comments
    read more

    ALBRITTON  JONSSON Frederik, WENNERLIND Carl, Politiques de la rareté, des origines du capitalisme à la crise écologique, Flammarion, 2026, 456 pages. Préface de Arnaud Orain.

    book 2026,  publications

    The authors trace the genealogy of the concept of “scarcity” of natural resources. They distinguish between Neo-Aristotelian, utopian, Malthusian, romantic, socialist and planetary scarcities. They criticise the capitalist and liberal system that has developed since the First Industrial Revolution and advocate rethinking the “relationship between nature and the economy”, which has gone through several periods since the origin of humanity. This relationship begins with the “cornucopian” approach, marked by the illusion that nature will eternally provide for all of man’s needs (despite food shortages and famines). This approach is opposed to the “finitist thesis”, according to which the world’s population must moderate its consumption by becoming aware of the gradual and inevitable extinction of natural resources. Globalisation is putting increasing pressure on natural resources and biodiversity. Is 21st-century man capable of stopping the reduction of his ecological footprint?  This approach has gradually extended to multiple resources: metals and rare earths, arable land, endangered species, etc. During the classical age, the physiocrats hoped for a “great restoration” made possible by the “rational exploitation of the land”; they were certain that “man would decipher the source code of nature”. From the Age of Enlightenment onwards, philosophers believed that “technical reason” would dominate the “naturalist ideal”, and in the 19th century, the engineers of the Industrial Revolution advocated the division of labour and free trade. Economists were confident that, in order to avoid degrading their environment, households would adapt their consumption patterns and that companies would create new processes and products that were economical in terms of energy and non-recyclable by-products.  Man was then considered a homo faber capable of “sculpting the world in his image”. But it was not until the 1970s that governments became fully aware of the challenges of preserving the environment and the need to establish a “sustainable and people-friendly economy” that meets the real needs of the population. The authors then recall the criticisms of modern consumerism and environmental degradation that were formulated by the Vatican in its encyclical Laudato si and by the various environmental movements. In particular, they analyse the effects of carbon emissions, ocean acidification, damage to biodiversity, etc. The phenomenon seems all the more worrying to them because 20 th -century man is unable to measure and correct the long-term effects of his activities. They share certain principles advocated by radical environmental movements, in favour of self-sufficiency and economic degrowth. They support the theory of Kahneman (Nobel Prize winner in Economics) according to which, due to a “negativity bias”, the pessimistic forecasts of the Club of Rome or the IPCC are generally viewed with disbelief or scepticism by the majority of the population.   The book testifies to the scholarship, persuasiveness and activist experience of its authors; it sheds light on the dilemma of the choice between a sustainable economy and a sustainable natural environment, without being able to resolve it. Frederik ALBRITTON JONSSON is a professor at the University of Chicago and Carl WENNERLIND is a historian specialising in modern Europe.

    June 17, 2026 / 0 Comments
    read more

    PHILIBERT Cédric , Climat : Les énergies de l’espoir, Editions Les petits matins, 2025, 222 pages.

    book 2026,  publications

    The blockade of the Strait of Hormuz brings us face to face with our dependence on fossil fuels and especially on oil. The energy transition is now facing a conflict where the stoppage of the supply of oil and gas is disrupting the world’s economies. The occupant of the White House, as a staunch defender of coal and the “liquid gold” of oil and gas, is blowing hot and cold on the markets to the detriment of the user, who sees their fuel bill skyrocket. Published last October, Cédric Philibert’s essay addresses the energy transition and renewable energies from an optimistic perspective. The solutions for a decarbonised world are there, and it is urgent to continue the transition that has begun. The author challenges a number of preconceived ideas through numerous quantified arguments. He sets the record straight in a polarised debate between climate sceptics and proponents of degrowth. In this essay, he demonstrates that resources such as solar or wind power are sufficient and abundant to achieve the transition. Having these energies available at a moderate cost will make it possible to move towards other possibilities, such as heating ores to several hundred degrees in order to accelerate hydrometallurgical processes, applicable to copper and rare earths, among others. One of the main levers for achieving carbon neutrality concerns the energy efficiency of vehicles. The author even claims that electric cars are good for the climate. Indeed, with the exponential development of renewable energies, electric vehicles will benefit from increasingly low-carbon electricity during their manufacture and lifetime. In addition, he also demonstrates that it is possible to achieve this transition without having harmful consequences for biodiversity. He believes that the energy transition as a whole does not have a significant impact on the rate of artificialisation. The development of agrivoltaics is a real opportunity to achieve the goal of decarbonising energy and has more impact than producing biofuels. As a solution, the author gives pride of place to moderation. To move towards net-zero emissions, it is necessary to divide net emissions of CO2, methane and nitrous oxide by 8 or 10. Nevertheless, we must remain vigilant about the “rebound effect”. Studies have shown that investments in the thermal renovation of buildings do not lead to a significant decrease in the energy consumption of buildings; since they are better insulated, the owners focus on their comfort.   A book to recommend to all readers who are keen on the issues of the energy transition and who want an objective view from an energy and climate expert. Cédric PHILIBERT is an independent consultant and senior analystin the field of energy and climate. He is also an associate researcher atthe French Institute of International Relations (Ifri). He advised theDirector General of the French Environment and Energy Management Agency(ADEME), before joining the United Nations Environment Programme(UNEP), then the IEA until 2019. Sophie FRIOT

    June 17, 2026 / 0 Comments
    read more

    Black, Scholes & Merton or mathematical neutralisation of chance

    Chroniques

    Philippe Alezard With Bachelier, finance had found its founding insight: stock market prices can be thought of as random movements and options as rights whose value depends on the probability of future prices. With Wiener, this intuition is given a rigorous mathematical foundation: the Brownian motion becomes a continuous process, with independent and Gaussian increments, capable of giving shape to uncertainty. Finally, with Markowitz, uncertainty is no longer merely described; it becomes the subject of a rational decision, organised at the level of a portfolio. However, a decisive question remained: if chance governs prices, is it possible to give a rigorous price to a contract that relates precisely to this chance? This is the question that Fischer Black, Myron Scholes and Robert C. Merton answered in the early 1970s. Their contribution is not just about producing a famous formula. It transforms the very nature of financial valuation. Before them, an option essentially appeared as a bet: the right to buy or sell an asset at a fixed price, in an uncertain future. After them, the option became an object that can be replicated, hedged and valued based on arbitrage reasoning. The price is no longer just an opinion about the future; it becomes the logical consequence of a dynamic hedging strategy. The intellectual and financial context of the 1960s and 1970s is essential to understanding this breakthrough. In the United States, finance was then in the process of becoming an independent academic discipline. Business schools were moving closer to the markets, price databases were developing, and Markowitz’s portfolio theory had introduced variance and covariance into the language of investors, while the CAPM (Capital Asset Pricing Model) of Sharpe, Lintner and Mossin sought to establish a balanced relationship between expected return and systematic risk. At the same time, the options markets, long dominated by over-the-counter transactions, were undergoing an institutional change. In April 1973, the Chicago Board Options Exchange opened its doors and offered, for the first time, an organised market for standardised stock option contracts. The publication of the Black-Scholes model came in the same year, almost at the exact moment when the market needed a common language to price, compare and hedge these new instruments. Fischer Sheffey Black was born in 1938 in Washington D.C. His career path was less linear than that of traditional academic economists. He first studied physics at Harvard before turning to applied mathematics and computer science. He obtained a doctorate from Harvard in 1964 in applied mathematics with a thesis devoted[1] to what we would now call artificial intelligence, at a time when this discipline was still in its infancy. Nothing in this initial career path would have predicted that he would become one of the founders of modern finance. However, this interdisciplinary background, spanning physics, calculus, logic and dynamic systems, undoubtedly explains his ability to view markets as formalisable mechanisms. After his studies, Black worked, among other places, at Arthur D. Little, a consulting firm where he met Jack Treynor[2], one of the pioneers of modern portfolio theory and the equilibrium model of financial assets. This meeting was decisive. Treynor introduced Black to financial problems and encouraged him to think about the links between risk, return and market equilibrium. Black then developed a very personal approach to finance: he was less interested in institutions than in the abstract forces that must govern prices if arbitrage opportunities are eliminated. His mind is that of a theoretical engineer: he seeks the hidden constraint, the necessary relationship, the equation that must be true if the market is consistent. Myron Scholes was born in 1941 in Timmins, Ontario, Canada, to a family with deep ties to the business world. In his Nobel autobiography, he emphasises the importance of this family environment: from a very young age, he was interested in trade, accounting, probability and risk. An eye operation during his adolescence disrupted his schooling and forced him to develop special working methods based on listening, memory and conceptualisation. This personal constraint would play an important role in his way of thinking: Scholes was not only a calculation technician, he was attentive to the economic structure of problems. He continued his studies at McMaster University, then at the University of Chicago, where he obtained his doctorate in 1969. Chicago was then one of the most powerful centres of the new financial economy. Eugene Fama was working there on market efficiency, Merton Miller on corporate finance, Milton Friedman on monetary theory, and the university’s intellectual tradition valued equilibrium reasoning, price consistency and the discipline imposed by competitive markets. There, Scholes received an economic education that was very different from the more institutional European tradition: the objective was not only to describe the markets, but to deduce what prices should be in a world where agents exploit all the possibilities of arbitrage. Robert Cox Merton was born in 1944 in New York. His father, Robert K. Merton, was one of the most influential sociologists of the 20th century, known in particular for his work on “self-fulfilling prophecy” and “unintended consequences”. Young Robert therefore grew up in an exceptional intellectual environment, but quickly chose a different path. He first studied mathematical engineering at Columbia in 1966, then applied mathematics at the California Institute of Technology, where he obtained his MS in 1967. He then joined MIT for his PhD in economics, under the supervision of Paul Samuelson. This point is crucial: Samuelson is one of Bachelier’s successors in American finance. Through him, Merton inherited a tradition in which mathematical physics, probability and economics could be brought together in a single analytical architecture. Merton had a more advanced technical mastery of stochastic calculus than most financial economists of his time. Where Black and Scholes construct a highly powerful arbitrage intuition, Merton gives the model its mathematical generality. His 1973 article[3], “Theory of Rational Option Pricing”, published in the Bell Journal of Economics and Management Science, broadens the framework, clarifies the conditions of validity, establishes general restrictions on option prices and embeds

    June 10, 2026 / 0 Comments
    read more

    Posts pagination

    1 2 … 25 Next

    Last Parutions

    Céline MARANGE, La guerre d’Europe a commencé, Les Arenes, 2026.
    July 1, 2026
    Read More
    Marlène Benquet, La finance aux extrêmes – Enquête sur le capitalisme autoritaire en France, La Découverte, janvier 2026, 256 pages, 22 €.
    July 1, 2026
    Read More

    Last Chronicles

    The ethical approach to AI: towards sustainable AI
    July 1, 2026
    Read More
    How does the company apply AI? The example of banking.
    June 23, 2026
    Read More