2 Work regarding the nature of scientific method

In his books Against Method and Science in a Free Society Feyerabend defended the idea that there are no methodological rules which are always used by scientists. He objected to any single prescriptive scientific method on the grounds that any such method would limit the activities of scientists, and hence restrict scientific progress. In his view, science would benefit most from an attitude of theoretical anarchism. He also thought that theoretical anarchism was desirable because it was more humanitarian than other systems of organization, by not imposing rigid rules on scientists.

Feyerabend's position is generally seen as extreme in the philosophy of science, because it implies that philosophy can neither succeed in providing a general description of science, nor in devising a method for differentiating products of science from non-scientific entities like myths. It also implies that philosophical guidelines should be ignored by scientists, if they are to aim for progress.

To support his position that methodological rules generally do not contribute to scientific success, Feyerabend provides counterexamples to the claim that (good) science operates according to a certain fixed method. He took some examples of episodes in science that are generally regarded as indisputable instances of progress (e.g. the Copernican revolution), and showed that all common prescriptive rules of science are violated in such circumstances. Moreover, he claimed that applying such rules in these historical situations would actually have prevented scientific revolution.

One of the criteria for evaluating scientific theories that Feyerabend attacks is the consistency criterium. He points out that to insist that new theories be consistent with old theories gives an unreasonable advantage to the older theory. He makes the logical point that being compatible with a defunct older theory does not increase the validity or truth of a new theory over an alternative covering the same content. That is, if one had to choose between two theories of equal explanatory power, to choose the one that is compatible with an older, falsified theory is to make an aesthetic, rather than a rational choice. The familiarity of such a theory might also make it more appealing to scientists, since they will not have to disregard as many cherished prejudices. Hence, that theory can be said to have "an unfair advantage".

Feyerabend was also critical of falsificationism. He argued that no interesting theory is ever consistent with all the relevant facts. This would rule out using a naive falsificationist rule which says that scientific theories should be rejected if they do not agree with known facts. Feyerabend uses several examples, but ' renormalization' in quantum mechanics provides an example of his intentionally provocative style: "This procedure consists in crossing out the results of certain calculations and replacing them by a description of what is actually observed. Thus one admits, implicitly, that the theory is in trouble while formulating it in a manner suggesting that a new principle has been discovered" (AM p. 61). Such jokes are not intended as a criticism of the practice of scientists. Feyerabend is not advocating that scientists not make use of renormalization or other ad hoc methods. Instead, he is arguing that such methods are essential to the progress of science for several reasons. One of these reasons is that progress in science is uneven. For instance, in the time of Galileo, optical theory could not account for phenomena that were observed by means of telescopes. So, astronomers who used telescopic observation had to use 'ad hoc' rules until they could justify their assumptions by means of optical theory.

Feyerabend was critical of any guideline that aimed to judge the quality of scientific theories by comparing them to known facts. He thought that previous theory might influence natural interpretations of observed phenomena. Scientists necessarily make implicit assumptions when comparing scientific theories to facts that they observe. Such assumptions need to be changed in order to make the new theory compatible with observations. The main example of the influence of natural interpretations that Feyerabend provided was the tower argument. The tower argument was one of the main objections against the theory of a moving earth. Aristotelians assumed that the fact that a stone which is dropped from a tower lands directly beneath it shows that the earth is stationary. They thought that, if the earth moved while the stone was falling, the stone would have been 'left behind'. Objects would fall diagonally instead of vertically. Since this does not happen, Aristotelians thought that it was evident that the earth did not move. If one uses ancient theories of impulse and relative motion, the Copernican theory indeed appears to be falsified by the fact that objects fall vertically on earth. This observation required a new interpretation to make it compatible with Copernican theory. Galileo was able to make such a change changing ideas about the nature of impulse and relative motion. Before such theories were articulated Galileo had to make use of 'ad hoc' methods and proceed counter-inductively. So, 'ad hoc' hypotheses actually have a positive function: they temporarily make a new theory compatible with facts until the theory to be defended can be supported by other theories.

Together these remarks sanction the introduction of theories that are inconsistent with well-established facts. Furthermore, a pluralistic methodology that involves making comparisons between any theories at all forces defendants to improve the articulation of each theory. In this way, scientific pluralism improves the critical power of science. Thus Feyerabend proposes that science might proceed best not by induction, but by counterinduction.

According to Feyerabend, new theories came to be accepted not because of their accord with scientific method, but because their supporters made use of any trick – rational, rhetorical or ribald – in order to advance their cause. Without a fixed ideology, or the introduction of religious tendencies, the only approach which does not inhibit progress (using whichever definition one sees fit) is "anything goes": "'anything goes' is not a 'principle' I hold... but the terrified exclamation of a rationalist who takes a closer look at history." (Feyerabend, 1975).

Feyerabend also thought that the possibility of incommensurability, a situation where scientific theories cannot be compared directly because they are based on incompatible assumptions, could also prevent the use of general standards for establishing the quality of scientific theories. He wrote that "it is hardly ever possible to give an explicit definition of [incommensurability]" (AM, p.225), because it involves covert classifications and major conceptual changes. He also was critical of attempts to capture incommensurability in a logical framework, since he thought of incommensurability as a phenomenon outside the domain of logic.

In Against Method Feyerabend claimed that Imre Lakatos' philosophy of research programmes is actually 'anarchism in disguise', because it does not issue orders to scientists. Feyerabend playfully dedicated Against Method to "Imre Lakatos: Friend, and fellow-anarchist".

3 Work regarding the role of science in society

Feyerabend described science as being essentially anarchistic, being obsessed with its own mythology, and making claims to truth well beyond its actual capacity. He was especially indignant about the condescending attitudes of many scientists towards alternative traditions. For example, he thought that negative opinions about astrology and the effectivity of rain dances were not justified by scientific research, and dismissed the predominantly negative attitudes of scientists towards such phenomena as elitist. In his opinion, science has become a repressing ideology, even though it started as a liberating movement. Feyerabend thought that society should be protected from being influenced too much by science, just as it is protected from other ideologies.

Starting from the assumption that an ahistorical universal scientific method does not exist, Feyerabend argued that science does not deserve its privileged status in western society. Since scientific points of view do not arise from using a universal method which guarantees high quality conclusions, he thought that there is no justification for valuing scientific claims over claims by other ideologies like religions. Feyerabend also argued that scientific accomplishments such as the moon landings are no compelling reason to give science a special status. In his opinion, it is not fair to use scientific assumptions about which problems are worth solving in order to judge the merit of other ideologies. Additionally, success by scientists has traditionally involved non-scientific elements, such as inspiration from mythical or religious sources.

Based on these arguments, Feyerabend defended the idea that science should be separated from the state in the same way that religion and state are separated in a modern secular society. He envisioned a 'free society' in which 'all traditions have equal rights and equal access to the centres of power'. For example, parents should be able to determine the ideological context of their children's education, instead of having limited options because of scientific standards. According to Feyerabend, science should also be completely subjected to democratic control: not only should the subjects that are investigated by scientists be determined by popular election, scientific assumptions and conclusions should also be supervised by committees of lay people. He thought that citizens should use their own principles when making decisions about these matters. In his opinion, the idea that decisions should be 'rationalistic' is elitist, since this assumes that philosophers or scientists are in a position to determine the criteria by which people in general should make their decisions.

4 Other works

Some of Feyerabend's work concerns the way in which people's perception of reality is influenced by various rules. In his last book, unfinished when he died, he talks of how our sense of reality is shaped and limited. Conquest of Abundance: A Tale of Abstraction versus the Richness of Being bemoans the propensity we have of institutionalizing these limitations.

5 Bibliography

Major works:

• Against Method : Outline of an Anarchistic Theory of Knowledge ( 1975)
• Science in a Free Society ( 1978)
• Farewell to Reason ( 1987)
• Three Dialogues on Knowledge ( 1991)
• Killing Time: The Autobiography of Paul Feyerabend ( 1995)
• Conquest of Abundance : A Tale of Abstraction versus the Richness of Being ( 1999)

Collected papers:

• Realism, Rationalism and Scientific Method: Philosophical papers, Volume 1 ( 1981)
• Problems of Empiricism: Philosophical Papers, Volume 2 ( 1981)
• Knowledge, Science and Relativism: Philosophical Papers, Volume 3 ( 1999)

6 External links

• Stanford Encyclopedia of Philosophy, "Paul Feyerabend"
• Feyerabend Forum

Feyerabend, Paul Feyerabend, Paul Feyerabend, Paul

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