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Single Idea 22185

[filed under theme 14. Science / B. Scientific Theories / 5. Commensurability ]

Full Idea

If two things are incommensurable they cannot be incompatible.

Gist of Idea

Two things can't be incompatible if they are incommensurable

Source

Samir Okasha (Philosophy of Science: Very Short Intro (2nd ed) [2016], 5)

Book Ref

Okasha,Samir: 'Philosophy of Science: very short intro (2nd ed)' [OUP 2016], p.80


A Reaction

Kuhn had claimed that two rival theories are incompatible, which forces the paradigm shift. He can't stop the slide off into total relativism. The point is there cannot be a conflict if there cannot even be a comparison.


The 10 ideas with the same theme [possibility of comparison between theories]:

Many different theories will fit the observed facts [Bacon]
Two goods may be comparable, although they are not commensurable [Ross]
We lack frames of reference to transform physics, biology and psychology into one another [Goodman]
In theory change, words shift their natural reference, so the theories are incommensurable [Kuhn]
Kuhn has a description theory of reference, so the reference of 'electron' changes with the descriptions [Rowlands on Kuhn]
Incommensurability assumes concepts get their meaning from within the theory [Kuhn, by Okasha]
Galileo's notions can't be 'incommensurable' if we can fully describe them [Putnam on Kuhn]
If theories are really incommensurable, we could believe them all [Newton-Smith]
One may understand a realm of ideas, but be unable to judge their rationality or truth [O'Grady]
Two things can't be incompatible if they are incommensurable [Okasha]