Against the "Ordinary Summing" Test for Convergence

Informal Logic 23 (3):215-236 (2003)
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Abstract

One popular test for distinguishing linked and convergent argument structures is Robert Yanal's Ordinary Summing Test. Douglas Walton, in his comprehensive survey of possible candidates for the linked/convergent distinction, advocates a particular version of Yanal's test. In a recent article, Alexander Tyaglo proposes to generalize and verifY Yanal's algorithm for convergent arguments, the basis for Yanal's Ordinary Summing Test. In this paper I will argue that Yanal's ordinary summing equation does not demarcate convergence and so his Ordinary Summing Test fails. Hence, despite Walton's recommendation or Tyaglo's generalization, the Ordinary Summing Test should not be used for distinguishing linked argument structures from convergent argument structures

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G. C. Goddu
University of Richmond

References found in this work

A Treatise on Probability.John Maynard Keynes - 1921 - London, England: Dover Publications.
A Treatise on Probability.J. M. Keynes - 1989 - British Journal for the Philosophy of Science 40 (2):219-222.
Choice and Chance: An Introduction to Inductive Logic.Brian Skyrms - 1966 - Belmont, CA, USA: Belmont, Calif., Dickenson Pub. Co..
Argument Structure a Pragmatic Theory.Douglas N. Walton - 1996 - Toronto and Buffalo: University of Toronto Press.
A Treatise on Probability.John Maynard Keynes - 1921 - London: Macmillan & Co..

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