We cannot, however, treat scientism synonymously with scientific expansionism because scientism takes expansionist and non-expansionist forms. The latter includes views where the natural sciences are unwarrantedly assigned a higher value over non-scientific areas of inquiry and culture but no attempt is made to expand the limits of natural science. For example, Tom Sorell, author of the seminal monograph on scientism, Scientism: Philosophy and the Infatuation with Science (1991), defines scientism as follows:
Scientism is a matter of putting too high a value on science in comparison with other branches of learning or culture
[Sorell, 1991, x]
This could be manifested in ways that do not involve any expansion of science. What is essential to scientism, based on Sorell’s definition, is an evaluative judgement of the value of science over non-scientific areas of inquiry and culture – for example, to hold that the arts or humanities are of little or no value compared to the sciences.
A look at scientism’s history helps to identify non-expansionist forms and the important role of scientific expansionism in the concept’s origins. ‘Science’, in the context of scientism, almost always concerns the natural sciences. ‘Science’ acquired its narrower modern use during the mid-19th century, when it became synonymous with natural science. This is its dominant sense today. ‘Scientism’ was coined not long afterwards (the Oxford English Dictionary cites its earliest occurrence as 1877). In the early 20th century, ‘scientism’ gained a pejorative connotation, largely following reactions against scientific expansionism – that is, against attempts to expand the bounds of the natural sciences by applying their methods to other disciplines. Some perceived this as excessively ambitious and worried that certain disciplines would become regarded as obsolete in comparison with science. Some allegations of scientism were directed at practitioners of non-scientific disciplines, particularly those working in the non-natural sciences, for imitating the teaching or vocabulary of the natural sciences in their fields.
In his seminal tripartite set of papers on scientism, ‘Scientism and the Study of Society’ (Economica, 1942–1944), F. A. von Hayek describes such imitation as definitive of scientism: ‘we shall’, he wrote, ‘wherever we are concerned … with that slavish imitation of the method and language of Science, speak of “scientism” or the “scientistic” prejudice’ (von Hayek, 1942, 269). This is one of the first explicit pejorative definitions of scientism.
In the first of his papers on scientism, Hayek offers an illuminating summary of its origins. Hayek argues that scientism, understood as the ‘slavish imitation’ of science, emerged during the first half of the 19th century. During this time, the increasing success of the natural sciences ‘began to exercise an extraordinary fascination on those working in other fields’. This led to those working in other disciplines – particularly the non-natural sciences – to ‘imitate … the teaching and vocabulary’ of the natural sciences. Disciplines outside the natural sciences ‘became increasingly concerned to vindicate their equal status by showing that their methods were the same as those of their brilliantly successful sisters’ – that is, the natural sciences. This ran the risk of those disciplines imitating methods from the natural sciences ‘rather than … adapting their [own] methods more and more to their own particular problems’ (von Hayek, 1942, 268).
If Hayek’s historical account is roughly correct, it is plausible that the focus laid on the natural sciences in the concept of scientism and the term’s negative connotation have been brought about largely as a result of the success of the natural sciences. Their success has led to a widespread belief that the methods of the natural sciences can be extrapolated; it has led some practitioners of other disciplines to imitate their methods; and it has led some to think that the natural sciences are more valuable than other fields.
Scientism, based on Hayek’s account, denotes imitation for science as a result of deference. This need not involve attempts to expand science. If such imitation is a form of scientism, the concept cannot be treated synonymously with ‘scientific expansionism’, pace Stenmark. While the most common type of scientism may well be what Stenmark calls scientific expansionism, it is not the only form scientism takes and it cannot be used as a means of defining it.