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160 pages, Hardcover
First published January 1, 2003
Kuhn’s ideas are interesting but, alas, they are much too vague to give rise to anything but lots of hot air. Never before has the literature on the philosophy of science been invaded by so many creeps and incompetents. Kuhn encourages people who have no idea why a stone falls to the ground to talk with assurance about the scientific method. Now I have no objection to incompetence but I do object when incompetence is accompanied by boredom and self-righteousness.
Even when writing about scientific experiments, [the Kuhnian's] focus remained fixed on the role of experiments in generating data, solving puzzles or testing theories – not on their material character as, say, an economist concerned with ‘externalities’ would treat experiments. In particular, he made a point of not asking whether the instruments used in experiments were inspired and/or applied in a military-industrial setting outside the experimental context.
After all, physicists gain the respect of their peers by designing clever experiments whose results can be captured by elegant mathematical formalisms, all the while remaining agnostic about the metaphysical significance of their inquiries. This is what makes physics a specialised science, as opposed to a total ideology.
Popper held that truth is always ‘transcendent’ of the community of inquirers, whereas for Kuhn truth is always ‘immanent’ in the community. If Kuhn located truth within a scientific paradigm, Popper found it in a ‘meta-language’ into which the knowledge claims of the paradigm may be translated and evaluated.
Post-Kuhnians have come to accept scientists’ working assumptions at face value, including the counter-intuitive implication that reality consists of many distinct worlds, each roughly corresponding to a scientific discipline. For example, whereas Lakatos had called on historians, philosophers and sociologists to master the technical details of contemporary science so as not to depend on scientists’ own ex cathedra pronouncements about the merits of their research programmes, Kuhn’s progeny master such details in order to impress scientists that they are sufficiently competent to be taken seriously at all. Kuhn’s reduction of the ends of science to the trajectories already being pursued by particular sciences has now inspired two generations of philosophers to believe that they should be taking their normative marching orders from the sciences they philosophise about, and hence do not question them unless the scientists themselves have done so first.
In science, this sense of ‘irrationality’ is most evident in its slavish adherence to track record – what Popper demonised as ‘induction’ – whereby the sheer fact that a particular discovery was made under the aegis of a particular theory is used as the basis for claiming that only upholders of that theory have proper access to that discovery.
While neither Kuhn nor Popper would care to deny that a specific paradigm may dominate the understanding of a particular slice of reality at particular time, they differ over whether it should be treated as a source of stability (Kuhn) or a problem to be overcome (Popper)
Whereas Popper treated the scientific laboratory as a site for making decisions, each of which may be reversed by a later one, Kuhn regarded the laboratory as a site for engaging in practices that deepen the scientist’s susceptibility to forming certain beliefs that will contribute to a clearer grasp of the vision of reality projected by her paradigm. Here Kuhn follows a long line of post-Augustinian thinkers from Blaise Pascal to the John Henry Newman for whom ‘justified belief’ or ‘real assent’ was characterised in most un-Popperian terms by a willingness to risk one’s life on an idea through practical devotion, a return to the etymological roots of ‘religion’ in the enchanted ritualisation of life.
"How can a mere philosopher devise criteria distinguishing between good and bad science, knowing it is an inutterable mystic secret of the Royal Society?" - Imre Lakatos (1973)
I don't know much about Thomas Kuhn or Karl Popper. What I was expecting from this book was a brief and accessible introduction to debates about the scientific method, using the tension between the two as a hook. What it actually turns out to be is a bit of a hatchet job on Thomas Kuhn. Probably the book is best read by someone with a basic grounding in the subject already, something I don't have, but it was still clear enough to be worth reading.
This is a bit more of a summary than a review as such.
Roughly speaking, Popper and Kuhn's approaches are as follows. For Popper, to decide between rival theories, scientists must set a test. Each theory makes a claim, and whichever is falsified fails the test should be discarded, regardless of its longevity or authority. (If your claim is unfalsifiable, it's not scientific.) Popper's vision is one of constant challenge for scientific theories, and regular failure, in which scientists themselves have to be protected from the consequences of being wrong.
For Kuhn, scientists work within "paradigms". "Normal science" is an incremental advance. It increases the power of a paradigm but also brings up problems. When the collection of problems gets too great, a successful new paradigm emerges and a scientific revolution occurs. Most famous scientists engaged in "revolutionary science" rather than (boring) "normal science".
The concept of paradigms is key to Kuhn's work, and he has been criticised for not having a clear definition. Different paradigms are "incommensurable", which may be an even more problematic term. What I think it means is that there is such a gap between them that it is impossible to translate a claim made by one theory into terms that can be made to verify the other. So there can be no independent test.
This leads to a fracture in the scientific community, which remains until the supporters of the losing theory "die off". At this point, the winning scientists rewrite history to make it look like science was always heading their way. There's certainly a good criticism of the Whig interpretation of history here.
However Fuller argues there are a number of negative effects of Kuhn's view of science. One is to break science into a multiplicity of specialised paradigms, which are protected from criticism from inside and out. This served the Cold War military-industrial complex. It persuaded scientists to work on incremental improvements rather than to think freely.
Kuhn's position relegated philosophers to "underlabourers" working at fringe problems to support scientists. It was explicitly uncritical, both epistemologically and normatively. Popper was critical of science on both counts. I think this lack of critical faculties affects 'serious' science (the dubious claims of evolutionary psychology, the maths of advanced physics, far from experimental verification) and the popularity of pseudo-science.
Oddly, I came out feeling I had a much better understanding of Kuhn's philosophy than Popper's, although I did come out wanting to find out more about Popper. Another disappointment was that some of the most important parts were also the least clear.
If you want a carefully balanced, broad introduction to this subject, Kuhn vs. Popper is not the place to go. Still, it's not a bad read, despite that.