Thomas Kuhn and Imre Lakatos - Imre Lakatos

11 important questions on Thomas Kuhn and Imre Lakatos - Imre Lakatos

What was Lakatos's work called?

"Essays in the logic of Mathematical discover"

Which problem is Lakatos trying to overcome?

Incommensurability

What was his main criticism of Kuhn and Popper?


Popper: naive falsificationism, immunizations happen all the time. This can still help scientific progress>
Kuhn: Paradigm shifts are irrational revolutions
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What is Sophisticated falsification?

Based on normal science and falsification. A theory is acceptable/scientific if it has corroborated excess empirical content over its predecessor, so only if it leads to the discovery of novel facts

- Assumptions in the hard core should not and cannot be falsified
- Immunization can improve progress by adjusting assumptions in the protective beld

When is a theory falsified?


A theory X is falsified only another theory Y has been proposed with the following characteristics?
1. Y predicts noval facts
2. Y explains the previous success of X (Not refused content of X is included in Y)
3. Some of the excess content of Y is corroborated

How does Lakatos look at empirical content?

Lakatos thinks that an increase in empirical content provides scientific progress. But this means that for any theory this has to be assessed with its hypotheses, conditions and predecessors. So we have to assess a series of theories instead of one theory.

How does Lakatos define the two kinds of progress to assess a series of theories?


A scientific research program is characterized by a sequence of theories
1. Theoretical progressive: each new theory predicts some novelty facts (more empirical content)


2. Empirical progressive: each new theory leads to the actual discovery of some new facts (better corroborated)

3. Degenerating: no progress

What is a crucial feature of Lakatos's falsificationism?

The replacement of the concept of theory by the concept of series of theories. The most important series are characterized by a certain continuity which connects the members. This continuity evolves from a genuine "research program"

What is a scientific research program?

Consists of methodological rules: some tell us parts of research to avoid (negative heuristic = hard core) and other tell us what points to pursue (positive heuristic= protective belt)


It is a cluster of interconnected theories derived from a common core



vb: neoclassical economics
hard core: markets converge to an equilibrium
protective belt: markets have multiple equilibria

What is a Hard Core?


Hard core: the purely metaphysical beliefs that unite the protagonists of a scientific research program. It is surrounded by the "protective belt" of testable theories. This protective belt consists of things that can be adjusted/ re-adjusted or even completely replaced. But you cannot attack te hard core

What is Lakatos's definition of paradigm shift?

A paradigm shift is a rational choice to abandon a degenerating research program in favor of a progressive research program

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