Questions: Thomas Kuhn and Paradigm Shifts

Question 1

A single pivotal experiment produces results that clearly contradict the reigning paradigm. According to Kuhn, what is the most likely immediate response of the scientific community?

• A. Scientists immediately abandon the paradigm and begin searching for a replacement
• B. Scientists try to save the paradigm by adding auxiliary hypotheses, questioning the experimental setup, or reinterpreting the anomaly
• C. The paradigm is formally falsified, as Popper's model would predict
• D. A public vote among researchers determines whether to discard the paradigm

Answer: (B)

Kuhn's central departure from Popper is the observation that scientists do not routinely try to falsify their paradigm. Normal scientists are invested in it — entire careers are built around it. When anomalies arise, the standard move is to protect the paradigm: adjust assumptions, blame instrument error, or treat the anomaly as an unsolved puzzle. Revolution requires both accumulated crisis (many unresolved anomalies) AND an available alternative paradigm to attract converts. A single contrary experiment almost never triggers a shift.

Question 2

What does Kuhn mean by 'incommensurability' between paradigms, and why is it philosophically significant?

• A. Paradigms cannot be measured against each other because they differ in the questions they ask, the standards they apply, and the vocabulary they use — making neutral comparison impossible
• B. Paradigms are incommensurable because older science is always inferior and cannot be compared fairly to newer science
• C. Incommensurability means the mathematics of different paradigms cannot be translated between each other
• D. Paradigms are incommensurable only when they describe the same phenomena using identical terminology

Answer: (A)

Incommensurability is Kuhn's most controversial claim. It means paradigms do not simply give different answers to the same questions; they partly ask different questions, use different standards for what counts as a good explanation, and interpret observations differently. Ptolemaic and Copernican astronomy were not just different answers about planetary positions — they were different frameworks. This means paradigm choice cannot be settled by pure logic or experiment: there is no neutral standpoint. Critics worry this implies relativism; Kuhn responded that later paradigms can still be genuinely better at solving certain problems even without a paradigm-neutral scoreboard.

Question 3

According to Kuhn, paradigm shifts represent a discontinuous change in the entire framework of scientific inquiry, not merely the replacement of one theory with a better-supported one.

• T. True
• F. False

Answer: True

This is Kuhn's core thesis. When a paradigm shifts, the standards of what counts as a valid explanation, the vocabulary for describing phenomena, and even which observations are considered significant all change together. The Newtonian revolution did not just replace Aristotelian mechanics with better mechanics — it reconceived what it means to explain motion. This is qualitatively different from normal science, where theories are revised within a stable framework.

Question 4

Once enough anomalies accumulate under a reigning paradigm, a paradigm shift will occur automatically, even without a viable alternative paradigm available.

• T. True
• F. False

Answer: False

Kuhn explicitly argues that crisis alone does not produce revolution. Scientists can sustain extraordinary commitment to a failing paradigm — they will accept mounting anomalies, acknowledge things are 'in a mess,' and wait — because the alternative to a flawed paradigm is not no paradigm, but no paradigm at all. Only when a concrete alternative is available to attract converts does the community begin transitioning. The availability of a new paradigm is a necessary condition for revolution, not just crisis.

Question 5

Why, according to Kuhn, is choosing between paradigms more like conversion than rational demonstration?

Model answer: Because paradigms are incommensurable — they differ in their standards of evidence, their vocabulary, and the questions they treat as meaningful — there is no neutral standpoint from which to evaluate them objectively. A scientist committed to the old paradigm can always find ways to resist the new one without logical contradiction. What actually moves scientists to switch is a combination of perceived problem-solving success of the new paradigm, generational change, social persuasion, and something like aesthetic appeal. Kuhn compares it to a gestalt switch: once you see it the new way, you can't unsee it.

This is the philosophically charged heart of Kuhn's argument. If paradigm choice were fully rational, we would expect immediate consensus once evidence tips one way. Instead, paradigm transitions involve resistance, generational turnover (old guard die off), and persuasion — patterns more characteristic of social and psychological processes than logical argument. Kuhn wasn't endorsing irrationalism, but he was insisting that the actual sociology of science doesn't match Popper's idealized picture of bold falsificationism.