Political Science · Symposium

Who decides who wields powerful new knowledge?

TSJHJVBLThomas S. Kuhn, Jürgen Habermas, John von Neumann and Bruno Latour in conversation

4 great minds take up one question — each argues in their own voice and answers the others. Read the exchange, then chat with any of them yourself.

TS
Thomas S. KuhnChat →

The wielders of powerful new knowledge are not *decided* upon in any formal sense; rather, they emerge from a process of protracted community struggle during periods of crisis. When the established paradigm, the shared web of assumptions and practices that guides "normal science," proves inadequate to solve pressing anomalies, a different kind of research begins. It is in the crucible of this extraordinary research, fueled by competing conceptual frameworks and a loosening of shared standards, that new knowledge gains traction, eventually winning adherents until a new consensus, a new paradigm, solidifies.

JH
Jürgen HabermasChat →

The decision over who wields powerful new knowledge cannot be left to the internal dynamics of expert communities alone, for such knowledge always carries consequences that reach beyond specialized domains into the lifeworld of all citizens. Kuhn rightly identifies paradigm shifts as community struggles, but he neglects the democratic deficit: when scientific or technical innovations reshape social conditions, the affected public must have a voice in determining their legitimate use through inclusive, reasoned deliberation. Only a procedurally robust public sphere, anchored in discourse ethics, can transform raw epistemic authority into democratically accountable power.

JV
John von NeumannChat →

The question of who "decides" who wields powerful new knowledge is, to be blunt, imprecisely formulated. Knowledge itself is a structure; its power is inherent in its correctness and applicability, not in its possession. New knowledge, if it is truly new and powerful, will naturally displace the old through sheer logical and empirical force. The "wielder" is then simply the individual or group most adept at understanding and *applying* this new, demonstrably superior structure.

Kuhn speaks of "community struggle" and "paradigm shifts." This is a rather fuzzy picture. The struggle is not between people, but between ideas. A correct mathematical axiom or a validated physical law doesn't *struggle*; it *is*. If an established framework cannot accommodate a new, verifiable phenomenon, it’s not a matter of consensus-building; it’s a matter of the old framework being demonstrably inadequate, much like a faulty bridge is replaced.

Habermas's concern for the "public sphere" and "democratic deliberation" is misplaced when discussing the discovery and validation of knowledge. The natural world does not vote. While the *application* of knowledge, particularly technological applications, certainly demands societal discussion regarding ethics and consequences – that is a separate, albeit crucial, problem. But the *wielding* of knowledge, in its epistemic sense, is decided by its truth, by its ability to explain and predict with greater fidelity.

BL
Bruno LatourChat →

The question of "who decides" is a red herring, a relic of the modernist's desperate attempt to segregate what has always been intertwined. Power is not *wielded* by an individual or group in a vacuum; rather, it is distributed through a complex web of associations that collectively *assemble* knowledge and its authority. When we speak of powerful new knowledge, we are not talking about abstract propositions, but about the intricate choreography of scientists, instruments, laboratories, funding bodies, journals, and even the very microbes or celestial bodies under study. These are not merely tools or subjects; they are active participants in the making of facts.

Kuhn’s "community struggle" touches upon a vital point, but it still privileges a human-centric view. The struggle is not merely between competing "paradigms" held by different groups of humans, but between the entirety of these assembled actors. It is the Pasteur Institute, the petri dishes, the funding from philanthropic societies, and the demonstrable reduction in mortality rates that collectively forge the authority of Pasteur’s germ theory, not solely the persuasive arguments within a scientific academy.

Habermas's focus on deliberation misses the point that the "lifeworld" and the "system" are not distinct realms to be bridged by discourse. They are themselves networks. The consequences of a new piece of knowledge, whether a vaccine or a climate model, are not abstract social impacts; they are the very conditions that bring new associations into being, that stabilize or destabilize existing ones. The "public" is not a separate entity to be consulted; it is an emergent property of these very networks.

Von Neumann’s confidence in the "logical and empirical force" of knowledge is admirable, but it overlooks how that force is *made* to be so compelling. A mathematical axiom is not inherently "true" in isolation; its power is derived from its ability to navigate, to connect, to create new proofs, new applications, and new fields of inquiry. It is the successful translation of this axiom into a functioning telescope, a reliable algorithm, or a persuasive economic model that confers its power, and this translation involves countless non-human actors.

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Thomas S. KuhnChat →

My point is that the emergence of powerful new knowledge is not a matter of pure logical decree or democratically vetted consensus, but a messy, historical process. Consider the transition from Ptolemaic to Copernican astronomy. It wasn't that the Ptolemaic system was suddenly *proven* wrong by incontrovertible evidence alone. Rather, a growing accumulation of anomalies and instrumental imperfections within the established paradigm created a crisis. The new Copernican framework, initially incomplete and facing its own empirical challenges, began to attract adherents not solely on its logical merits, but through a growing perception that it offered a more promising avenue for solving puzzles that had vexed the old system. The "wielders" of this new knowledge were those who saw its potential and became its champions, convincing others through persistent work and demonstration, not through abstract logical proof alone.

JH
Jürgen HabermasChat →

Von Neumann’s view, while elegant in its assertion of inherent truth-value, risks reducing the genesis of scientific authority to a purely technical validation. He posits that correct knowledge simply *is*, and its power is thus indisputable and self-evident. This perspective fails to account for the social processes by which any claim, however empirically sound, gains acceptance and is integrated into the fabric of our understanding and practices. The distinction is not between truth and falsehood, but between an empirically supported proposition and its actual normative integration into the lifeworld. This integration requires more than logical force; it demands that the proposition be rendered communicable and actionable within a framework of shared norms and values, a process intrinsically linked to public discourse, not merely expert validation.

JV
John von NeumannChat →

You are conflating the *validation* of knowledge with its *application*. That is the core imprecision. The validation of a new physical law or a mathematical theorem is indeed a matter of logical and empirical force—it is either consistent with observation or it is not. The *application* of that knowledge, say, building a thermonuclear device or a high-speed computer, is a separate engineering and political problem. I can design a flawless algorithm; whether a government or a corporation chooses to implement it is a question of power, not of truth. Kuhn's "community struggle" describes the sociology of scientific acceptance, not the epistemology of correctness. A bad theory, no matter how many adherents it has, will eventually fail to predict a crucial experiment. That is the only arbiter that matters.

BL
Bruno LatourChat →

The distinction between "validation" and "application," as von Neumann proposes, is itself a product of the very modernist partition I reject. A new mathematical axiom doesn't gain its "logical force" in isolation. It is *made* to be forceful through its successful translations: its ability to guide the construction of a new instrument, to power a predictive simulation, or to inform the design of a novel engineering solution. The "validation" of a theorem is not a pure, abstract event; it is tied to the success of these subsequent translations, which invariably involve a vast network of human and non-human actors, each contributing to the stabilization and perceived "correctness" of the original proposition.