Functional Logic • Inquiry and Analogy • 7
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https://inquiryintoinquiry.com/2023/06/27/functional-logic-inquiry-and-anal…
Inquiry and Analogy • Peirce’s Formulation of Analogy • Version 2
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https://oeis.org/wiki/Functional_Logic_%E2%80%A2_Inquiry_and_Analogy#Peirce…
All,
Here's another formulation of analogical inference Peirce gave some years later.
<QUOTE CSP:>
C.S. Peirce • “A Theory of Probable Inference” (1883)
The formula of the analogical inference
presents, therefore, three premisses, thus:
S′, S″, S‴, are a random sample of some undefined class X,
of whose characters P′, P″, P‴, are samples,
T is P′, P″, P‴;
S′, S″, S‴, are Q's;
Hence, T is a Q.
We have evidently here an induction and an hypothesis
followed by a deduction; thus:
[Parallel Column Display]
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https://inquiryintoinquiry.files.wordpress.com/2022/04/peirce-on-analogy-e2…
Hence, deductively, T is a Q.
(Peirce, CP 2.733, with a few changes in Peirce's notation to facilitate comparison
between the two versions)
</QUOTE>
Figure 8 shows the logical relationships involved in the above analysis.
Figure 8. Peirce's Formulation of Analogy (Version 2)
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Regards,
Jon