Scientism

 ( 19th Century In Philosophy ) 

More generally, scientism is often interpreted as science applied "in excess". This use of the term scientism has two senses:

• The improper use of science or scientific claims. This usage applies equally in contexts where science might not apply, such as when the topic is perceived as beyond the scope of scientific inquiry, and in contexts where there is insufficient empirical evidence to justify a scientific conclusion. It includes an excessive deference to the claims of scientists or an uncritical eagerness to accept any result described as scientific. This can be a counterargument to appeals to scientific authority. It can also address attempts to apply natural science methods and claims of certainty to the social sciences, which Friedrich Hayek described in The Counter-Revolution of Science (1952) as being impossible, because those methods attempt to eliminate the "human factor", while social sciences (including his own topic of economics) mainly concern the study of praxeology.
• "The belief that the methods of natural science, or the categories and things recognized in natural science, form the only proper elements in any philosophical or other inquiry", or that "science, and only science, describes the world as it is in itself, independent of perspective" with a concomitant "elimination of the psychological and dimensions of experience". Tom Sorell provides this definition: "Scientism is a matter of putting too high a value on natural science in comparison with other branches of learning or culture." Philosophers such as Alexander Rosenberg have also adopted "scientism" as a name for the opinion that science is the only reliable source of knowledge.
  Alex Rosenberg (2025). 9780393344110, W. W. Norton. ISBN 9780393344110

It is also sometimes used to describe the universal applicability of the scientific method, and the opinion that empirical science constitutes the most authoritative worldview or the most valuable part of human learning, sometimes to the complete exclusion of other opinions, such as history, philosophical, economic or cultural opinions. It has been defined as "the view that the characteristic inductive methods of the natural sciences are the only source of genuine factual knowledge and, in particular, that they alone can yield true knowledge about man and society". The term scientism is also used by historians, philosophers, and cultural critics to highlight the possible dangers of lapses towards excessive reductionism with respect to all topics of human knowledge.

For practising the tradition of Max Weber, such as Jürgen Habermas and Max Horkheimer, the concept of scientism relates significantly to the philosophy of positivism, but also to the cultural rationalization for modern Western culture.

• It is used to criticize a totalizing opinion of science as if it were capable of describing all reality and knowledge, or as if it were the only true method to acquire knowledge about reality and the nature of things;
• It is used, often pejoratively, to denote violations by which the theories and methods of one (scientific) discipline are applied inappropriately to another (scientific or non-scientific) discipline and its domain. An example of this second usage is to term as scientism any attempt to claim science as the only or primary source of human values (a traditional domain of ethics) or as the source of meaning and purpose (a traditional domain of religion and related ).

The term scientism was popularized by F. A. Hayek, who defined it in 1942 as the "slavish imitation of the method and language of Science".

Mathematician Alexander Grothendieck, in his 1971 essay "The New Universal Church", characterized scientism as a religion-like ideology that advocates scientific reductionism, scientific authoritarianism, political technocracy and technological salvation, while denying the epistemological validity of feelings and experiences such as love, emotion, beauty and fulfillment. He predicted that "in coming years, the chief political dividing line will fall less and less among the traditional division between 'right' and 'left', but increasingly between the adherents of scientism, who advocate 'technological progress at any price', and their opponents, i.e., roughly speaking, those who regard the enhancement of life, in all its richness and variety, as being the supreme value". Translated by John Bell.

E. F. Schumacher, in his A Guide for the Perplexed (1977), criticized scientism as an impoverished world view confined solely to what can be counted, measured and weighed. "The architects of the modern worldview, notably Galileo and Descartes, assumed that those things that could be weighed, measured, and counted were more true than those that could not be quantified. If it couldn't be counted, in other words, it didn't count."

In 1979, Karl Popper defined scientism as "the aping of what is widely mistaken for the method of science".

In 2003, Mikael Stenmark proposed the expression scientific expansionism as a synonym of scientism. In the Encyclopedia of Science and Religion, he wrote that, while the that are described as scientism have many possible forms and varying degrees of ambition, they share the idea that the boundaries of science (that is, typically the natural sciences) could and should be expanded so that something that has not been previously considered as a subject pertinent to science can now be understood as part of science (usually with science becoming the sole or the main arbiter regarding this area or dimension). According to Stenmark, the strongest form of scientism states that science does not have any boundaries and that all human problems and all aspects of human endeavor, with due time, will be dealt with and solved by science alone. This idea has also been termed the myth of progress.

Intellectual historian T. J. Jackson Lears argued in 2013 that there has been a recent reemergence of "nineteenth-century positivist faith that a reified 'science' has discovered (or is about to discover) all the important truths about human life. Precise measurement and rigorous calculation, in this view, are the basis for finally settling enduring metaphysical and Morality controversies." Lears specifically identified Harvard psychologist Steven Pinker's work as falling in this category. Philosophers John N. Gray and Thomas Nagel have made similar criticisms against popular works by moral psychologist Jonathan Haidt, atheist author Sam Harris, and writer Malcolm Gladwell.

Gregory R. Peterson wrote that "for many theologians and philosophers, scientism is among the greatest of intellectual sins". Genetic biology Austin L. Hughes wrote in the conservative journal The New Atlantis that scientism has much in common with superstition: "the stubborn insistence that something ... has powers which no evidence supports."

Repeating common criticisms of logical positivism and verificationism, philosopher of religion Keith Ward has said that scientism is philosophically inconsistent or even self-refuting, as the truth of the two statements "no statements are true unless they can be proven scientifically (or )" and "no statements are true unless they can be shown empirically to be true" cannot themselves be proven scientifically, logically, or empirically.

In 2018, philosophers Maarten Boudry and Massimo Pigliucci co-edited a book titled Science Unlimited? The Challenges of Scientism in which a number of chapters by philosophers and scientists defended scientism.

Habermas is critical of pure instrumental rationality, arguing that the "Social Life–World" of subjective experiencing is better suited to literary expression. Where the sciences select experiences that can be expressed in formal language using general definitions, the literary arts select private, unrepeatable experiences where definitions are generated through "intersubjectivity of mutual understanding in each concrete case".