Whoever hears the word “scientism” first thinks of hostility toward science — and is precisely wrong. Scientism is not a position against science but a philosophical stance about it: the claim that the methods of natural science are the only legitimate access to valid knowledge. This claim is not itself scientific. It can neither be proven nor ever be proven by scientific means, because it concerns the very boundary at which science begins and ends. Whoever defends it is doing metaphysics, and usually a kind of metaphysics that does not see through its own presuppositions.
#The Invisible Boundary
Science is a method. It isolates measurable aspects of the world, formulates testable hypotheses, gathers data, and corrects itself against reality. Within this frame its results are reliable and cumulative; it has built bridges, pushed back disease, made the moon landing possible. No serious philosophical critique is directed against this method. Within what it sets out to do, it is legitimate.
Scientism takes one step further and in doing so forgets the very thing that gives the method its strength: its self-restraint. It declares the measurable and repeatable to be the measure of reality itself, and on that basis excludes whatever does not fit that format. Consciousness, meaning, value, the living as living, the inner experience of the I — phenomena whose reality does not depend on whether they can be quantified are pronounced unreal because the method does not reach them. Reality does not vanish; perception narrows.
#Where Method Becomes Worldview
Jochen Kirchhoff (1944–2025) often condensed the movement from legitimate procedure to illegitimate generalisation into two terms in his lectures: “methodological atheism” and “methodological geocentrism” (cf. Kirchhoff, J., 2019, Was ist Erkenntnis?). Modern natural science, he argued, operates as if there were no spirit, and projects the conditions of earthly experience onto the entire cosmos as though everything else were merely a variation of here. Both simplifications are usable as methodological stances; they reduce complexity to what the method can handle. They become a problem the moment they leave the method behind and present themselves as statements about reality.
Goethe described the same movement with a more precise image: hypotheses are scaffoldings one erects in front of the building and dismantles once the building is finished. The fundamental error consists in mistaking the scaffolding for the building, the abstraction for reality (cf. Goethe, Maximen und Reflexionen). Exactly this error is the core of scientism. It takes the model with which science simplifies the world to be the world itself. Whatever is missing from the model is henceforth treated as nonexistent.
Friedrich Schelling had already made this diagnosis in 1797, long before scientism had a name. In his Ideen zu einer Philosophie der Natur he shows that mathematical description of nature delivers precision but no epistemic value: whoever wishes to describe Homer’s works by counting the letters has the letters, but knows nothing of the inner movement (cf. Schelling, 1797, Ideen zu einer Philosophie der Natur). A science that only counts the letters and claims thereby to have understood the work is not wrong; it has overstepped its domain.
#The Line from Galileo to the Present
In the nineteenth century Friedrich Nietzsche dismantled the epistemic mechanics of scientism. Natural science, he observed, operates with fictions that are reworked into hypotheses and finally traded as reality (cf. Nietzsche, 1882, Die fröhliche Wissenschaft). This works (machines can be built, processes calculated), but it explains nothing about the inner essence of what one is working with. Hans Vaihinger systematised this insight in 1911 in his Philosophie des Als-Ob: the realm of fictive natural science is far larger than one supposes. Function is not the same as truth.
The line runs through. The assumption that everything real must in principle be scientifically and computationally accessible is no invention of the twenty-first century; it reaches back to Galileo’s programme of mathematical natural description. What Galileo pursued as method has hardened over four centuries into an unquestioned matter of course. Jochen Kirchhoff’s assessment that transhumanism is “the consistent continuation of the abstractionist natural science since Galileo” (cf. Kirchhoff, J., 2023, KI und Transhumanismus als Bedrohung des Lebendigen) names this continuity. If the human being counts only as what can be measured of him — as neural network, as genetic code, as information-processing system — then his technical optimisation is not a break with science but its logical extension.
#What Scientism Licenses
In Gwendolin Kirchhoff’s reading, scientism is the meta-position that philosophically supports two related and already more developed concepts. Materialism is the ontological consequence: if only the measurable and quantifiable counts as real, then reality is the material. Reductionism is the methodological consequence: whatever cannot be reduced to parts has no place in the explanation. Both can be criticised on their own terms, but neither stands without the scientistic prior decision that makes them plausible in the first place.
This chain explains why philosophical objections against the technosphere or against transhumanism regularly meet with incomprehension. Whoever thinks within the scientistic frame cannot hear the objection that the living is categorially irreducible; that frame has no place for it. The living as something ontologically of its own kind does not exist in its world-model. The discussion takes place on two different levels that do not reach one another so long as the prior decision itself remains unspoken.
#Science, Without Losing It
Naturphilosophie, as Schelling founded it and Goethe carried out methodologically, does not seek to replace science. It looks for the point at which scientific method acknowledges what it cannot reach, and thereby becomes more precise in what it can. Goethe’s concept of the Urphänomen marks exactly this point: an epistemic boundary that cannot be further decomposed without losing its object, and that has to be recognised rather than overrun in the urge to push further (cf. Goethe, Maximen und Reflexionen).
An anti-scientistic position is therefore not anti-scientific. It is anti-dogmatic. It demands of science what science is properly supposed to do: reflect on its own presuppositions. Materialist natural science presents metaphysical assumptions as established facts; the claim that matter is primary and consciousness derivative is, in Gwendolin Kirchhoff’s diagnosis, bad metaphysics — a stance that does not reflect on its own status as a stance. A conscious metaphysics would be the opposite move: not to abandon the method but to lay open its philosophical ground. What must already be presupposed before any measurement cannot itself be produced by measurement. Scientism lives by concealing this simple insight.
The term critique of science names this reflection in its developed form. It is not a refusal but a more exact form of attention: to what a method achieves, what it excludes, and what its exclusion costs. Whoever has once seen the difference between science and scientism sees both more sharply: the one in its real strength, the other in its unexamined overreach.